Add stub implementation of #onUpdateCursorAnchorInfo

This CL never changes existing behavior because
ProductionFlags.ENABLE_CURSOR_ANCHOR_INFO_CALLBACK is
not yet turned on.

Change-Id: I4bcbd2aebd05977b07231e8aa14acdcf6d8e1fa0
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index 91b01b5..3993517 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -49,11 +49,13 @@
 import android.view.Window;
 import android.view.WindowManager;
 import android.view.inputmethod.CompletionInfo;
+import android.view.inputmethod.CursorAnchorInfo;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodSubtype;
 
 import com.android.inputmethod.accessibility.AccessibilityUtils;
 import com.android.inputmethod.annotations.UsedForTesting;
+import com.android.inputmethod.compat.CursorAnchorInfoCompatWrapper;
 import com.android.inputmethod.compat.InputConnectionCompatUtils;
 import com.android.inputmethod.compat.InputMethodServiceCompatUtils;
 import com.android.inputmethod.dictionarypack.DictionaryPackConstants;
@@ -972,6 +974,16 @@
         super.onUpdateCursor(rect);
     }
 
+    // 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) {
+            final CursorAnchorInfoCompatWrapper wrapper =
+                    CursorAnchorInfoCompatWrapper.fromObject(info);
+            // TODO: Implement here
+        }
+    }
+
     /**
      * This is called when the user has clicked on the extracted text view,
      * when running in fullscreen mode.  The default implementation hides