Support InputMethodManager#updateCursorAnchorInfo for Android 5.0

content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java

Index: content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java b/content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java
index bebd6f09d2a9551a085ad96887b163ca642febe7..3728bf3b7482406dd2a3c28ea11feb691b98d6f6 100644
--- a/content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java
+++ b/content/public/android/java/src/org/chromium/content/browser/input/ThreadedInputConnection.java
@@ -601,9 +601,15 @@ public class ThreadedInputConnection implements ChromiumBaseInputConnection {
      * @see InputConnection#requestCursorUpdates(int)
      */
     @Override
-    public boolean requestCursorUpdates(int cursorUpdateMode) {
+    public boolean requestCursorUpdates(final int cursorUpdateMode) {
         if (DEBUG_LOGS) Log.w(TAG, "requestCursorUpdates [%x]", cursorUpdateMode);
         assertOnImeThread();
-        return false;
+        ThreadUtils.postOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                mImeAdapter.onRequestCursorUpdates(cursorUpdateMode);
+            }
+        });
+        return true;
     }
-}
+}