Route OnDragEvent through ViewAndroid tree

content/public/android/java/src/org/chromium/content/browser/ContentView.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.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Rect;
 import android.os.Build;
@@ skipping 163 matching lines @@
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (isFocused()) {
             return mContentViewCore.dispatchKeyEvent(event);
         } else {
             return super.dispatchKeyEvent(event);
         }
     }
 
     @Override
     public boolean onDragEvent(DragEvent event) {
-        return mContentViewCore.onDragEvent(event);
+        return getEventForwarder().onDragEvent(event, this);
     }
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         return getEventForwarder().onTouchEvent(event);
     }
 
     /**
      * Mouse move events are sent on hover enter, hover move and hover exit.
      * They are sent on hover exit because sometimes it acts as both a hover
@@ skipping 150 matching lines @@
         public ContentViewApi23(Context context, ContentViewCore cvc) {
             super(context, cvc);
         }
 
         @Override
         public void onProvideVirtualStructure(final ViewStructure structure) {
             mContentViewCore.onProvideVirtualStructure(structure, false);
         }
     }
 }