Hide the Paste popup when input is received from IME.

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.SearchManager;
 import android.content.ClipboardManager;
@@ skipping 1666 matching lines @@
      */
     public void onWindowFocusChanged(boolean hasWindowFocus) {
         if (!hasWindowFocus) resetGestureDetection();
     }
 
     public void onFocusChanged(boolean gainFocus) {
         if (!gainFocus) {
             hideImeIfNeeded();
             cancelRequestToScrollFocusedEditableNodeIntoView();
         }
+        if (getPastePopup().isShowing())

[jdduke (slow), 2014/07/23 14:35:14]

We shouldn't instantiate a new PastePopup (done by getPastePopup()) just to
check if it's showing.  Please use the existing |hidePastePopup()| method, and
put the method under the if (!gainFocus) branch.

Hmm, actually, do we get a SelectionEvent after we lose focus? Could you check
if there are any events forwarded to onSelectionEvent() at some point in this
sequence?

[Cyan, 2014/07/23 15:41:52]

@jdduke:
We are not getting any SelectionEvent after we lose focus.In fact no event is
being forwarded to SelectionEvent in this sequence.I'm modifying the patch the
way you suggested. Will upload the new patch in sometime.

+            mPastePopupMenu.hide();
         if (mNativeContentViewCore != 0) nativeSetFocus(mNativeContentViewCore, gainFocus);
     }
 
     /**
      * @see View#onKeyUp(int, KeyEvent)
      */
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (mPopupZoomer.isShowing() && keyCode == KeyEvent.KEYCODE_BACK) {
             mPopupZoomer.hide(true);
             return true;
@@ skipping 1531 matching lines @@
 
     private native void nativeExtractSmartClipData(long nativeContentViewCoreImpl,
             int x, int y, int w, int h);
     private native void nativeSetBackgroundOpaque(long nativeContentViewCoreImpl, boolean opaque);
 
     private native void nativeResumeResponseDeferredAtStart(
             long nativeContentViewCoreImpl);
     private native void nativeSetHasPendingNavigationTransitionForTesting(
             long nativeContentViewCoreImpl);
 }