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

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

 // Copyright (c) 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.input;
 
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
@@ skipping 60 matching lines @@
         if (mIsShowing) {
             mHandle.showPastePopupWindow();
         }
     }
 
     public void showHandleWithPastePopup() {
         showHandle();
         showPastePopup();
     }
 
+    /**
+     * @return whether the handle is being dragged.
+     */
+    public boolean isDragging() {
+        return mHandle != null && mHandle.isDragging();
+    }
+
     /** Shows the handle at the given coordinates, as long as automatic showing is allowed */
     public void onCursorPositionChanged() {
         if (mAllowAutomaticShowing) {
             showHandle();
         }
     }
 
     /**
      * Moves the handle so that it points at the given coordinates.
      * @param x Handle x in physical pixels.
@@ skipping 225 matching lines @@
             } else {
                 // Horizontal clipping
                 coords[0] = Math.max(0, coords[0]);
                 coords[0] = Math.min(screenWidth - width, coords[0]);
             }
 
             mContainer.showAtLocation(mParent, Gravity.NO_GRAVITY, coords[0], coords[1]);
         }
     }
 }