[Android] Don't hide text handles if they are being dragged

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.app.Activity;
 import android.app.SearchManager;
 import android.content.ContentResolver;
 import android.content.Context;
@@ skipping 2252 matching lines @@
                 break;
 
             default:
                 break;
         }
     }
 
     // Makes the insertion/selection handles invisible. They will fade back in shortly after the
     // last call to scheduleTextHandleFadeIn (or temporarilyHideTextHandles).
     private void temporarilyHideTextHandles() {
-        if (isSelectionHandleShowing()) {
+        if (isSelectionHandleShowing() && !mSelectionHandleController.isDragging()) {
             mSelectionHandleController.setHandleVisibility(HandleView.INVISIBLE);
         }
-        if (isInsertionHandleShowing()) {
+        if (isInsertionHandleShowing() && !mInsertionHandleController.isDragging()) {
             mInsertionHandleController.setHandleVisibility(HandleView.INVISIBLE);
         }
         scheduleTextHandleFadeIn();
     }
 
     private boolean allowTextHandleFadeIn() {
         if (mContentViewGestureHandler.isNativeScrolling() ||
                 mContentViewGestureHandler.isNativePinching()) {
             return false;
         }
@@ skipping 977 matching lines @@
 
     private native void nativeAttachExternalVideoSurface(
             int nativeContentViewCoreImpl, int playerId, Surface surface);
 
     private native void nativeDetachExternalVideoSurface(
             int nativeContentViewCoreImpl, int playerId);
 
     private native void nativeSetAccessibilityEnabled(
             int nativeContentViewCoreImpl, boolean enabled);
 }