MediaBrowser2: Fix naming inconsistencies

This CL modifies following APIs:

1. getLibraryRoot() related
 - onGetRoot => onGetLibraryRoot
 - onGetRootResult => onGetLibraryRootDone

2. getItem() related
 - onLoadItem => onGetItem
   - Also renamed argument: itemId => mediaId
 - onItemLoaded => onGetItemDone

3. getChildren() related
 - notifyChildrenChanged/onChildrenChanged
   - Renamed argument: childCount => itemCount
 - onLoadChildren => onGetChildren
 - onChildrenLoaded => onGetChildrenDone

4. getSearchResult() related
 - onLoadSearchResult => onGetSearchResult
 - onSearchResultLoaded => onGetSearchResultDone

Bug: 73711101
Test: Passed MediaBrowser2Test
Change-Id: I7f59686e21f4de9d4512cd19067c944e49faad39
diff --git a/packages/MediaComponents/src/com/android/media/IMediaSession2Callback.aidl b/packages/MediaComponents/src/com/android/media/IMediaSession2Callback.aidl
index 9a0be7a..6a03989 100644
--- a/packages/MediaComponents/src/com/android/media/IMediaSession2Callback.aidl
+++ b/packages/MediaComponents/src/com/android/media/IMediaSession2Callback.aidl
@@ -47,12 +47,12 @@
     //////////////////////////////////////////////////////////////////////////////////////////////
     // Browser sepcific
     //////////////////////////////////////////////////////////////////////////////////////////////
-    void onGetRootResult(in Bundle rootHints, String rootMediaId, in Bundle rootExtra);
-    void onItemLoaded(String mediaId, in Bundle result);
-    void onChildrenChanged(String rootMediaId, int childCount, in Bundle extras);
-    void onChildrenLoaded(String parentId, int page, int pageSize, in List<Bundle> result,
+    void onGetLibraryRootDone(in Bundle rootHints, String rootMediaId, in Bundle rootExtra);
+    void onGetItemDone(String mediaId, in Bundle result);
+    void onChildrenChanged(String rootMediaId, int itemCount, in Bundle extras);
+    void onGetChildrenDone(String parentId, int page, int pageSize, in List<Bundle> result,
             in Bundle extras);
     void onSearchResultChanged(String query, int itemCount, in Bundle extras);
-    void onSearchResultLoaded(String query, int page, int pageSize, in List<Bundle> result,
+    void onGetSearchResultDone(String query, int page, int pageSize, in List<Bundle> result,
             in Bundle extras);
 }
diff --git a/packages/MediaComponents/src/com/android/media/MediaBrowser2Impl.java b/packages/MediaComponents/src/com/android/media/MediaBrowser2Impl.java
index c095187..9190dfc 100644
--- a/packages/MediaComponents/src/com/android/media/MediaBrowser2Impl.java
+++ b/packages/MediaComponents/src/com/android/media/MediaBrowser2Impl.java
@@ -180,23 +180,23 @@
         }
     }
 
-    public void onGetRootResult(
+    public void onGetLibraryRootDone(
             final Bundle rootHints, final String rootMediaId, final Bundle rootExtra) {
         getCallbackExecutor().execute(() -> {
-            mCallback.onGetRootResult(rootHints, rootMediaId, rootExtra);
+            mCallback.onGetLibraryRootDone(rootHints, rootMediaId, rootExtra);
         });
     }
 
-    public void onItemLoaded(String mediaId, MediaItem2 item) {
+    public void onGetItemDone(String mediaId, MediaItem2 item) {
         getCallbackExecutor().execute(() -> {
-            mCallback.onItemLoaded(mediaId, item);
+            mCallback.onGetItemDone(mediaId, item);
         });
     }
 
-    public void onChildrenLoaded(String parentId, int page, int pageSize, List<MediaItem2> result,
+    public void onGetChildrenDone(String parentId, int page, int pageSize, List<MediaItem2> result,
             Bundle extras) {
         getCallbackExecutor().execute(() -> {
-            mCallback.onChildrenLoaded(parentId, page, pageSize, result, extras);
+            mCallback.onGetChildrenDone(parentId, page, pageSize, result, extras);
         });
     }
 
@@ -206,16 +206,16 @@
         });
     }
 
-    public void onSearchResultLoaded(String query, int page, int pageSize, List<MediaItem2> result,
+    public void onGetSearchResultDone(String query, int page, int pageSize, List<MediaItem2> result,
             Bundle extras) {
         getCallbackExecutor().execute(() -> {
-            mCallback.onSearchResultLoaded(query, page, pageSize, result, extras);
+            mCallback.onGetSearchResultDone(query, page, pageSize, result, extras);
         });
     }
 
-    public void onChildrenChanged(final String parentId, int childCount, final Bundle extras) {
+    public void onChildrenChanged(final String parentId, int itemCount, final Bundle extras) {
         getCallbackExecutor().execute(() -> {
-            mCallback.onChildrenChanged(parentId, childCount, extras);
+            mCallback.onChildrenChanged(parentId, itemCount, extras);
         });
     }
 }
diff --git a/packages/MediaComponents/src/com/android/media/MediaLibraryService2Impl.java b/packages/MediaComponents/src/com/android/media/MediaLibraryService2Impl.java
index b9d2fa4..1cce38a 100644
--- a/packages/MediaComponents/src/com/android/media/MediaLibraryService2Impl.java
+++ b/packages/MediaComponents/src/com/android/media/MediaLibraryService2Impl.java
@@ -95,23 +95,23 @@
 
         @Override
         public void notifyChildrenChanged_impl(ControllerInfo controller, String parentId,
-                int childCount, Bundle extras) {
+                int itemCount, Bundle extras) {
             if (controller == null) {
                 throw new IllegalArgumentException("controller shouldn't be null");
             }
             if (parentId == null) {
                 throw new IllegalArgumentException("parentId shouldn't be null");
             }
-            getSessionStub().notifyChildrenChangedNotLocked(controller, parentId, childCount,
+            getSessionStub().notifyChildrenChangedNotLocked(controller, parentId, itemCount,
                     extras);
         }
 
         @Override
-        public void notifyChildrenChanged_impl(String parentId, int childCount, Bundle extras) {
+        public void notifyChildrenChanged_impl(String parentId, int itemCount, Bundle extras) {
             if (parentId == null) {
                 throw new IllegalArgumentException("parentId shouldn't be null");
             }
-            getSessionStub().notifyChildrenChangedNotLocked(parentId, childCount, extras);
+            getSessionStub().notifyChildrenChangedNotLocked(parentId, itemCount, extras);
         }
 
         @Override
diff --git a/packages/MediaComponents/src/com/android/media/MediaSession2CallbackStub.java b/packages/MediaComponents/src/com/android/media/MediaSession2CallbackStub.java
index e174d91..2178ccd 100644
--- a/packages/MediaComponents/src/com/android/media/MediaSession2CallbackStub.java
+++ b/packages/MediaComponents/src/com/android/media/MediaSession2CallbackStub.java
@@ -209,7 +209,7 @@
     // MediaBrowser specific
     ////////////////////////////////////////////////////////////////////////////////////////////
     @Override
-    public void onGetRootResult(Bundle rootHints, String rootMediaId, Bundle rootExtra)
+    public void onGetLibraryRootDone(Bundle rootHints, String rootMediaId, Bundle rootExtra)
             throws RuntimeException {
         final MediaBrowser2Impl browser;
         try {
@@ -222,12 +222,12 @@
             // TODO(jaewan): Revisit here. Could be a bug
             return;
         }
-        browser.onGetRootResult(rootHints, rootMediaId, rootExtra);
+        browser.onGetLibraryRootDone(rootHints, rootMediaId, rootExtra);
     }
 
 
     @Override
-    public void onItemLoaded(String mediaId, Bundle itemBundle) throws RuntimeException {
+    public void onGetItemDone(String mediaId, Bundle itemBundle) throws RuntimeException {
         final MediaBrowser2Impl browser;
         try {
             browser = getBrowser();
@@ -239,12 +239,12 @@
             // TODO(jaewan): Revisit here. Could be a bug
             return;
         }
-        browser.onItemLoaded(mediaId,
+        browser.onGetItemDone(mediaId,
                 MediaItem2Impl.fromBundle(browser.getContext(), itemBundle));
     }
 
     @Override
-    public void onChildrenLoaded(String parentId, int page, int pageSize,
+    public void onGetChildrenDone(String parentId, int page, int pageSize,
             List<Bundle> itemBundleList, Bundle extras) throws RuntimeException {
         final MediaBrowser2Impl browser;
         try {
@@ -265,7 +265,7 @@
                 result.add(MediaItem2.fromBundle(browser.getContext(), bundle));
             }
         }
-        browser.onChildrenLoaded(parentId, page, pageSize, result, extras);
+        browser.onGetChildrenDone(parentId, page, pageSize, result, extras);
     }
 
     @Override
@@ -286,7 +286,7 @@
     }
 
     @Override
-    public void onSearchResultLoaded(String query, int page, int pageSize,
+    public void onGetSearchResultDone(String query, int page, int pageSize,
             List<Bundle> itemBundleList, Bundle extras) throws RuntimeException {
         final MediaBrowser2Impl browser;
         try {
@@ -307,11 +307,11 @@
                 result.add(MediaItem2.fromBundle(browser.getContext(), bundle));
             }
         }
-        browser.onSearchResultLoaded(query, page, pageSize, result, extras);
+        browser.onGetSearchResultDone(query, page, pageSize, result, extras);
     }
 
     @Override
-    public void onChildrenChanged(String parentId, int childCount, Bundle extras) {
+    public void onChildrenChanged(String parentId, int itemCount, Bundle extras) {
         final MediaBrowser2Impl browser;
         try {
             browser = getBrowser();
@@ -323,6 +323,6 @@
             // TODO(jaewan): Revisit here. Could be a bug
             return;
         }
-        browser.onChildrenChanged(parentId, childCount, extras);
+        browser.onChildrenChanged(parentId, itemCount, extras);
     }
 }
diff --git a/packages/MediaComponents/src/com/android/media/MediaSession2Stub.java b/packages/MediaComponents/src/com/android/media/MediaSession2Stub.java
index 914f85e..55ea490 100644
--- a/packages/MediaComponents/src/com/android/media/MediaSession2Stub.java
+++ b/packages/MediaComponents/src/com/android/media/MediaSession2Stub.java
@@ -554,9 +554,9 @@
                 return;
             }
             final ControllerInfoImpl controllerImpl = ControllerInfoImpl.from(controller);
-            LibraryRoot root = session.getCallback().onGetRoot(controller, rootHints);
+            LibraryRoot root = session.getCallback().onGetLibraryRoot(controller, rootHints);
             try {
-                controllerImpl.getControllerBinder().onGetRootResult(rootHints,
+                controllerImpl.getControllerBinder().onGetLibraryRootDone(rootHints,
                         root == null ? null : root.getRootId(),
                         root == null ? null : root.getExtras());
             } catch (RemoteException e) {
@@ -588,9 +588,9 @@
                 return;
             }
             final ControllerInfoImpl controllerImpl = ControllerInfoImpl.from(controller);
-            MediaItem2 result = session.getCallback().onLoadItem(controller, mediaId);
+            MediaItem2 result = session.getCallback().onGetItem(controller, mediaId);
             try {
-                controllerImpl.getControllerBinder().onItemLoaded(
+                controllerImpl.getControllerBinder().onGetItemDone(
                         mediaId, result == null ? null : result.toBundle());
             } catch (RemoteException e) {
                 // Controller may be died prematurely.
@@ -629,10 +629,10 @@
                 return;
             }
             final ControllerInfoImpl controllerImpl = ControllerInfoImpl.from(controller);
-            List<MediaItem2> result = session.getCallback().onLoadChildren(
+            List<MediaItem2> result = session.getCallback().onGetChildren(
                     controller, parentId, page, pageSize, extras);
             if (result != null && result.size() > pageSize) {
-                throw new IllegalArgumentException("onLoadChildren() shouldn't return media items "
+                throw new IllegalArgumentException("onGetChildren() shouldn't return media items "
                         + "more than pageSize. result.size()=" + result.size() + " pageSize="
                         + pageSize);
             }
@@ -646,7 +646,7 @@
             }
 
             try {
-                controllerImpl.getControllerBinder().onChildrenLoaded(
+                controllerImpl.getControllerBinder().onGetChildrenDone(
                         parentId, page, pageSize, bundleList, extras);
             } catch (RemoteException e) {
                 // Controller may be died prematurely.
@@ -712,10 +712,10 @@
                 return;
             }
             final ControllerInfoImpl controllerImpl = ControllerInfoImpl.from(controller);
-            List<MediaItem2> result = session.getCallback().onLoadSearchResult(
+            List<MediaItem2> result = session.getCallback().onGetSearchResult(
                     controller, query, page, pageSize, extras);
             if (result != null && result.size() > pageSize) {
-                throw new IllegalArgumentException("onLoadSearchResult() shouldn't return media "
+                throw new IllegalArgumentException("onGetSearchResult() shouldn't return media "
                         + "items more than pageSize. result.size()=" + result.size() + " pageSize="
                         + pageSize);
             }
@@ -729,7 +729,7 @@
             }
 
             try {
-                controllerImpl.getControllerBinder().onSearchResultLoaded(
+                controllerImpl.getControllerBinder().onGetSearchResultDone(
                         query, page, pageSize, bundleList, extras);
             } catch (RemoteException e) {
                 // Controller may be died prematurely.
@@ -754,7 +754,7 @@
             if (session == null) {
                 return;
             }
-            session.getCallback().onSubscribed(controller, parentId, option);
+            session.getCallback().onSubscribe(controller, parentId, option);
             synchronized (mLock) {
                 Set<String> subscription = mSubscriptions.get(controller);
                 if (subscription == null) {
@@ -781,7 +781,7 @@
             if (session == null) {
                 return;
             }
-            session.getCallback().onUnsubscribed(controller, parentId);
+            session.getCallback().onUnsubscribe(controller, parentId);
             synchronized (mLock) {
                 mSubscriptions.remove(controller);
             }
@@ -951,23 +951,23 @@
     }
 
     public void notifyChildrenChangedNotLocked(ControllerInfo controller, String parentId,
-            int childCount, Bundle extras) {
+            int itemCount, Bundle extras) {
         // TODO(jaewan): Handle when controller is disconnected and no longer valid.
         //               Note: Commands may be sent while onConnected() is running. Should we also
         //                     consider it as error?
-        notifyChildrenChangedInternalNotLocked(controller, parentId, childCount, extras);
+        notifyChildrenChangedInternalNotLocked(controller, parentId, itemCount, extras);
     }
 
-    public void notifyChildrenChangedNotLocked(String parentId, int childCount, Bundle extras) {
+    public void notifyChildrenChangedNotLocked(String parentId, int itemCount, Bundle extras) {
         final List<ControllerInfo> controllers = getControllers();
         for (int i = 0; i < controllers.size(); i++) {
-            notifyChildrenChangedInternalNotLocked(controllers.get(i), parentId, childCount,
+            notifyChildrenChangedInternalNotLocked(controllers.get(i), parentId, itemCount,
                     extras);
         }
     }
 
     public void notifyChildrenChangedInternalNotLocked(final ControllerInfo controller,
-            String parentId, int childCount, Bundle extras) {
+            String parentId, int itemCount, Bundle extras) {
         // Ensure subscription
         synchronized (mLock) {
             Set<String> subscriptions = mSubscriptions.get(controller);
@@ -978,7 +978,7 @@
         final IMediaSession2Callback callbackBinder =
                 ControllerInfoImpl.from(controller).getControllerBinder();
         try {
-            callbackBinder.onChildrenChanged(parentId, childCount, extras);
+            callbackBinder.onChildrenChanged(parentId, itemCount, extras);
         } catch (RemoteException e) {
             // TODO(jaewan): Handle controller removed?
         }
diff --git a/packages/MediaComponents/test/src/android/media/MediaBrowser2Test.java b/packages/MediaComponents/test/src/android/media/MediaBrowser2Test.java
index 7e93232..1abb9b4 100644
--- a/packages/MediaComponents/test/src/android/media/MediaBrowser2Test.java
+++ b/packages/MediaComponents/test/src/android/media/MediaBrowser2Test.java
@@ -71,13 +71,13 @@
 
     interface TestBrowserCallbackInterface extends TestControllerCallbackInterface {
         // Browser specific callbacks
-        default void onGetRootResult(Bundle rootHints, String rootMediaId, Bundle rootExtra) {}
-        default void onItemLoaded(String mediaId, MediaItem2 result) {}
-        default void onChildrenChanged(String parentId, int childCount, Bundle extras) {}
-        default void onChildrenLoaded(String parentId, int page, int pageSize,
+        default void onGetLibraryRootDone(Bundle rootHints, String rootMediaId, Bundle rootExtra) {}
+        default void onGetItemDone(String mediaId, MediaItem2 result) {}
+        default void onChildrenChanged(String parentId, int itemCount, Bundle extras) {}
+        default void onGetChildrenDone(String parentId, int page, int pageSize,
                 List<MediaItem2> result, Bundle extras) {}
         default void onSearchResultChanged(String query, int itemCount, Bundle extras) {}
-        default void onSearchResultLoaded(String query, int page, int pageSize,
+        default void onGetSearchResultDone(String query, int page, int pageSize,
                 List<MediaItem2> result, Bundle extras) {}
     }
 
@@ -89,7 +89,8 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onGetRootResult(Bundle rootHints, String rootMediaId, Bundle rootExtra) {
+            public void onGetLibraryRootDone(Bundle rootHints, String rootMediaId,
+                    Bundle rootExtra) {
                 assertTrue(TestUtils.equals(param, rootHints));
                 assertEquals(MockMediaLibraryService2.ROOT_ID, rootMediaId);
                 assertTrue(TestUtils.equals(MockMediaLibraryService2.EXTRAS, rootExtra));
@@ -111,7 +112,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onItemLoaded(String mediaIdOut, MediaItem2 result) {
+            public void onGetItemDone(String mediaIdOut, MediaItem2 result) {
                 assertEquals(mediaId, mediaIdOut);
                 assertNotNull(result);
                 assertEquals(mediaId, result.getMediaId());
@@ -132,7 +133,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onItemLoaded(String mediaIdOut, MediaItem2 result) {
+            public void onGetItemDone(String mediaIdOut, MediaItem2 result) {
                 assertEquals(mediaId, mediaIdOut);
                 assertNull(result);
                 latch.countDown();
@@ -156,7 +157,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onChildrenLoaded(String parentIdOut, int pageOut, int pageSizeOut,
+            public void onGetChildrenDone(String parentIdOut, int pageOut, int pageSizeOut,
                     List<MediaItem2> result, Bundle extrasOut) {
                 assertEquals(parentId, parentIdOut);
                 assertEquals(page, pageOut);
@@ -192,7 +193,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onChildrenLoaded(String parentIdOut, int pageOut, int pageSizeOut,
+            public void onGetChildrenDone(String parentIdOut, int pageOut, int pageSizeOut,
                     List<MediaItem2> result, Bundle extrasOut) {
                 assertNotNull(result);
                 assertEquals(0, result.size());
@@ -213,7 +214,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final TestControllerCallbackInterface callback = new TestBrowserCallbackInterface() {
             @Override
-            public void onChildrenLoaded(String parentIdOut, int pageOut, int pageSizeOut,
+            public void onGetChildrenDone(String parentIdOut, int pageOut, int pageSizeOut,
                     List<MediaItem2> result, Bundle extrasOut) {
                 assertNull(result);
                 latch.countDown();
@@ -246,7 +247,7 @@
             }
 
             @Override
-            public void onSearchResultLoaded(String queryOut, int pageOut, int pageSizeOut,
+            public void onGetSearchResultDone(String queryOut, int pageOut, int pageSizeOut,
                     List<MediaItem2> result, Bundle extrasOut) {
                 assertEquals(query, queryOut);
                 assertEquals(page, pageOut);
@@ -336,7 +337,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final SessionCallbackProxy callbackProxy = new SessionCallbackProxy(mContext) {
             @Override
-            public void onSubscribed(ControllerInfo info, String parentId, Bundle extras) {
+            public void onSubscribe(ControllerInfo info, String parentId, Bundle extras) {
                 if (Process.myUid() == info.getUid()) {
                     assertEquals(testParentId, parentId);
                     assertTrue(TestUtils.equals(testExtras, extras));
@@ -357,7 +358,7 @@
         final CountDownLatch latch = new CountDownLatch(1);
         final SessionCallbackProxy callbackProxy = new SessionCallbackProxy(mContext) {
             @Override
-            public void onUnsubscribed(ControllerInfo info, String parentId) {
+            public void onUnsubscribe(ControllerInfo info, String parentId) {
                 if (Process.myUid() == info.getUid()) {
                     assertEquals(testParentId, parentId);
                     latch.countDown();
@@ -395,7 +396,7 @@
             }
 
             @Override
-            public void onSubscribed(ControllerInfo info, String parentId, Bundle extras) {
+            public void onSubscribe(ControllerInfo info, String parentId, Bundle extras) {
                 if (Process.myUid() == info.getUid()) {
                     final MediaLibrarySession session =  (MediaLibrarySession) mSession;
                     session.notifyChildrenChanged(testParentId2, testChildrenCount, null);
@@ -407,18 +408,17 @@
         final TestBrowserCallbackInterface controllerCallbackProxy =
                 new TestBrowserCallbackInterface() {
                     @Override
-                    public void onChildrenChanged(String parentId, int childCount,
-                            Bundle extras) {
+                    public void onChildrenChanged(String parentId, int itemCount, Bundle extras) {
                         switch ((int) latch.getCount()) {
                             case 3:
                                 assertEquals(testParentId2, parentId);
-                                assertEquals(testChildrenCount, childCount);
+                                assertEquals(testChildrenCount, itemCount);
                                 assertNull(extras);
                                 latch.countDown();
                                 break;
                             case 2:
                                 assertEquals(testParentId2, parentId);
-                                assertEquals(testChildrenCount, childCount);
+                                assertEquals(testChildrenCount, itemCount);
                                 assertTrue(TestUtils.equals(testExtras, extras));
                                 latch.countDown();
                                 break;
@@ -496,29 +496,29 @@
         }
 
         @Override
-        public void onGetRootResult(Bundle rootHints, String rootMediaId, Bundle rootExtra) {
-            super.onGetRootResult(rootHints, rootMediaId, rootExtra);
+        public void onGetLibraryRootDone(Bundle rootHints, String rootMediaId, Bundle rootExtra) {
+            super.onGetLibraryRootDone(rootHints, rootMediaId, rootExtra);
             if (mCallbackProxy instanceof TestBrowserCallbackInterface) {
                 ((TestBrowserCallbackInterface) mCallbackProxy)
-                        .onGetRootResult(rootHints, rootMediaId, rootExtra);
+                        .onGetLibraryRootDone(rootHints, rootMediaId, rootExtra);
             }
         }
 
         @Override
-        public void onItemLoaded(String mediaId, MediaItem2 result) {
-            super.onItemLoaded(mediaId, result);
+        public void onGetItemDone(String mediaId, MediaItem2 result) {
+            super.onGetItemDone(mediaId, result);
             if (mCallbackProxy instanceof TestBrowserCallbackInterface) {
-                ((TestBrowserCallbackInterface) mCallbackProxy).onItemLoaded(mediaId, result);
+                ((TestBrowserCallbackInterface) mCallbackProxy).onGetItemDone(mediaId, result);
             }
         }
 
         @Override
-        public void onChildrenLoaded(String parentId, int page, int pageSize,
+        public void onGetChildrenDone(String parentId, int page, int pageSize,
                 List<MediaItem2> result, Bundle extras) {
-            super.onChildrenLoaded(parentId, page, pageSize, result, extras);
+            super.onGetChildrenDone(parentId, page, pageSize, result, extras);
             if (mCallbackProxy instanceof TestBrowserCallbackInterface) {
                 ((TestBrowserCallbackInterface) mCallbackProxy)
-                        .onChildrenLoaded(parentId, page, pageSize, result, extras);
+                        .onGetChildrenDone(parentId, page, pageSize, result, extras);
             }
         }
 
@@ -532,21 +532,21 @@
         }
 
         @Override
-        public void onSearchResultLoaded(String query, int page, int pageSize,
+        public void onGetSearchResultDone(String query, int page, int pageSize,
                 List<MediaItem2> result, Bundle extras) {
-            super.onSearchResultLoaded(query, page, pageSize, result, extras);
+            super.onGetSearchResultDone(query, page, pageSize, result, extras);
             if (mCallbackProxy instanceof TestBrowserCallbackInterface) {
                 ((TestBrowserCallbackInterface) mCallbackProxy)
-                        .onSearchResultLoaded(query, page, pageSize, result, extras);
+                        .onGetSearchResultDone(query, page, pageSize, result, extras);
             }
         }
 
         @Override
-        public void onChildrenChanged(String parentId, int childCount, Bundle extras) {
-            super.onChildrenChanged(parentId, childCount, extras);
+        public void onChildrenChanged(String parentId, int itemCount, Bundle extras) {
+            super.onChildrenChanged(parentId, itemCount, extras);
             if (mCallbackProxy instanceof TestBrowserCallbackInterface) {
                 ((TestBrowserCallbackInterface) mCallbackProxy)
-                        .onChildrenChanged(parentId, childCount, extras);
+                        .onChildrenChanged(parentId, itemCount, extras);
             }
         }
 
diff --git a/packages/MediaComponents/test/src/android/media/MockMediaLibraryService2.java b/packages/MediaComponents/test/src/android/media/MockMediaLibraryService2.java
index e1cce25..af14507 100644
--- a/packages/MediaComponents/test/src/android/media/MockMediaLibraryService2.java
+++ b/packages/MediaComponents/test/src/android/media/MockMediaLibraryService2.java
@@ -148,12 +148,12 @@
         }
 
         @Override
-        public LibraryRoot onGetRoot(ControllerInfo controller, Bundle rootHints) {
+        public LibraryRoot onGetLibraryRoot(ControllerInfo controller, Bundle rootHints) {
             return new LibraryRoot(MockMediaLibraryService2.this, ROOT_ID, EXTRAS);
         }
 
         @Override
-        public MediaItem2 onLoadItem(ControllerInfo controller, String mediaId) {
+        public MediaItem2 onGetItem(ControllerInfo controller, String mediaId) {
             if (MEDIA_ID_GET_ITEM.equals(mediaId)) {
                 return createMediaItem(mediaId);
             } else {
@@ -162,7 +162,7 @@
         }
 
         @Override
-        public List<MediaItem2> onLoadChildren(ControllerInfo controller, String parentId, int page,
+        public List<MediaItem2> onGetChildren(ControllerInfo controller, String parentId, int page,
                 int pageSize, Bundle extras) {
             if (PARENT_ID.equals(parentId)) {
                 return getPaginatedResult(GET_CHILDREN_RESULT, page, pageSize);
@@ -195,7 +195,7 @@
         }
 
         @Override
-        public List<MediaItem2> onLoadSearchResult(ControllerInfo controllerInfo,
+        public List<MediaItem2> onGetSearchResult(ControllerInfo controllerInfo,
                 String query, int page, int pageSize, Bundle extras) {
             if (SEARCH_QUERY.equals(query)) {
                 return getPaginatedResult(SEARCH_RESULT, page, pageSize);
@@ -205,13 +205,13 @@
         }
 
         @Override
-        public void onSubscribed(ControllerInfo controller, String parentId, Bundle extras) {
-            mCallbackProxy.onSubscribed(controller, parentId, extras);
+        public void onSubscribe(ControllerInfo controller, String parentId, Bundle extras) {
+            mCallbackProxy.onSubscribe(controller, parentId, extras);
         }
 
         @Override
-        public void onUnsubscribed(ControllerInfo controller, String parentId) {
-            mCallbackProxy.onUnsubscribed(controller, parentId);
+        public void onUnsubscribe(ControllerInfo controller, String parentId) {
+            mCallbackProxy.onUnsubscribe(controller, parentId);
         }
     }
 
diff --git a/packages/MediaComponents/test/src/android/media/TestServiceRegistry.java b/packages/MediaComponents/test/src/android/media/TestServiceRegistry.java
index a18ad8e..08e0cf0 100644
--- a/packages/MediaComponents/test/src/android/media/TestServiceRegistry.java
+++ b/packages/MediaComponents/test/src/android/media/TestServiceRegistry.java
@@ -75,8 +75,8 @@
          */
         public void onServiceDestroyed() { }
 
-        public void onSubscribed(ControllerInfo info, String parentId, Bundle extra) { }
-        public void onUnsubscribed(ControllerInfo info, String parentId) { }
+        public void onSubscribe(ControllerInfo info, String parentId, Bundle extra) { }
+        public void onUnsubscribe(ControllerInfo info, String parentId) { }
     }
 
     @GuardedBy("TestServiceRegistry.class")