Camera1: Set preview to be asynchronous, and remove dead code

- Use the controlledByApp flag to make sure application-bound
  preview buffer queue is asynchronous as before
- Remove setPreviewDisplay in service, since it is no longer in
  the binder interface
- Rename setPreviewTexture to setPreviewTarget, to make it clear it's
  the only game in town now. Rename only on the binder level and service
  for now.

Bug: 10312644
Change-Id: Icd33a462022f9729a63dc65c69b755cb7969857e
diff --git a/camera/ICamera.cpp b/camera/ICamera.cpp
index 12356f0..8c6e1f7 100644
--- a/camera/ICamera.cpp
+++ b/camera/ICamera.cpp
@@ -29,7 +29,7 @@
 
 enum {
     DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
-    SET_PREVIEW_TEXTURE,
+    SET_PREVIEW_TARGET,
     SET_PREVIEW_CALLBACK_FLAG,
     SET_PREVIEW_CALLBACK_TARGET,
     START_PREVIEW,
@@ -70,14 +70,14 @@
     }
 
     // pass the buffered IGraphicBufferProducer to the camera service
-    status_t setPreviewTexture(const sp<IGraphicBufferProducer>& bufferProducer)
+    status_t setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer)
     {
-        ALOGV("setPreviewTexture");
+        ALOGV("setPreviewTarget");
         Parcel data, reply;
         data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
         sp<IBinder> b(bufferProducer->asBinder());
         data.writeStrongBinder(b);
-        remote()->transact(SET_PREVIEW_TEXTURE, data, &reply);
+        remote()->transact(SET_PREVIEW_TARGET, data, &reply);
         return reply.readInt32();
     }
 
@@ -104,7 +104,7 @@
         return reply.readInt32();
     }
 
-    // start preview mode, must call setPreviewDisplay first
+    // start preview mode, must call setPreviewTarget first
     status_t startPreview()
     {
         ALOGV("startPreview");
@@ -114,7 +114,7 @@
         return reply.readInt32();
     }
 
-    // start recording mode, must call setPreviewDisplay first
+    // start recording mode, must call setPreviewTarget first
     status_t startRecording()
     {
         ALOGV("startRecording");
@@ -285,12 +285,12 @@
             reply->writeNoException();
             return NO_ERROR;
         } break;
-        case SET_PREVIEW_TEXTURE: {
-            ALOGV("SET_PREVIEW_TEXTURE");
+        case SET_PREVIEW_TARGET: {
+            ALOGV("SET_PREVIEW_TARGET");
             CHECK_INTERFACE(ICamera, data, reply);
             sp<IGraphicBufferProducer> st =
                 interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
-            reply->writeInt32(setPreviewTexture(st));
+            reply->writeInt32(setPreviewTarget(st));
             return NO_ERROR;
         } break;
         case SET_PREVIEW_CALLBACK_FLAG: {