Remove ENABLE_CURSOR_ANCHOR_INFO_CALLBACK

We can now start relying on L APIs even in unbundled release.

This means ENABLE_CURSOR_ANCHOR_INFO_CALLBACK can be always true.
Hence we simply remove it.

Change-Id: I0353e992e97e252059f83accea100504594bf171
diff --git a/java-overridable/src/com/android/inputmethod/latin/define/ProductionFlags.java b/java-overridable/src/com/android/inputmethod/latin/define/ProductionFlags.java
index 9d7258d..5738ea2 100644
--- a/java-overridable/src/com/android/inputmethod/latin/define/ProductionFlags.java
+++ b/java-overridable/src/com/android/inputmethod/latin/define/ProductionFlags.java
@@ -24,14 +24,6 @@
     public static final boolean IS_HARDWARE_KEYBOARD_SUPPORTED = false;
 
     /**
-     * When true, enable {@link InputMethodService#onUpdateCursorAnchorInfo} callback via
-     * {@link InputConnection#requestUpdateCursorAnchorInfo}. This flag has no effect in API
-     * Level 20 and prior. In general, this callback provides detailed positional information,
-     * even though an explicit support is required by the editor.
-     */
-    public static final boolean ENABLE_CURSOR_ANCHOR_INFO_CALLBACK = true;
-
-    /**
      * Include all suggestions from all dictionaries in {@link SuggestedWords#mRawSuggestions}.
      */
     public static final boolean INCLUDE_RAW_SUGGESTIONS = false;
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index be2efb2..1cd285c 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -755,12 +755,12 @@
         if (prevExtractEditText == nextExtractEditText) {
             return;
         }
-        if (ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK && prevExtractEditText != null) {
+        if (prevExtractEditText != null) {
             prevExtractEditText.getViewTreeObserver().removeOnPreDrawListener(
                     mExtractTextViewPreDrawListener);
         }
         mExtractEditText = nextExtractEditText;
-        if (ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK && mExtractEditText != null) {
+        if (mExtractEditText != null) {
             mExtractEditText.getViewTreeObserver().addOnPreDrawListener(
                     mExtractTextViewPreDrawListener);
         }
@@ -776,8 +776,7 @@
             };
 
     private void onExtractTextViewPreDraw() {
-        if (!ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK || !isFullscreenMode()
-                || mExtractEditText == null) {
+        if (!isFullscreenMode() || mExtractEditText == null) {
             return;
         }
         final CursorAnchorInfo info = CursorAnchorInfoUtils.getCursorAnchorInfo(mExtractEditText);
@@ -1060,7 +1059,7 @@
     // We cannot mark this method as @Override until new SDK becomes publicly available.
     // @Override
     public void onUpdateCursorAnchorInfo(final CursorAnchorInfo info) {
-        if (!ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK || isFullscreenMode()) {
+        if (isFullscreenMode()) {
             return;
         }
         mInputLogic.onUpdateCursorAnchorInfo(CursorAnchorInfoCompatWrapper.fromObject(info));
diff --git a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
index 1b1d5e7..f67a9a6 100644
--- a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
+++ b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java
@@ -169,14 +169,11 @@
             mInputLogicHandler.reset();
         }
 
-        if (ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK) {
-            // AcceptTypedWord feature relies on CursorAnchorInfo.
-            if (settingsValues.mShouldShowUiToAcceptTypedWord) {
-                mConnection.requestCursorUpdates(true /* enableMonitor */,
-                        true /* requestImmediateCallback */);
-            }
-            mTextDecorator.reset();
+        if (settingsValues.mShouldShowUiToAcceptTypedWord) {
+            mConnection.requestCursorUpdates(true /* enableMonitor */,
+                    true /* requestImmediateCallback */);
         }
+        mTextDecorator.reset();
     }
 
     /**