browser-plugin: Accept drags through the new WebPlugin interface

content/renderer/browser_plugin/browser_plugin.h

 // 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.
 
 #ifndef  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 90 matching lines @@
   void Stop();
   // A request from Javascript has been made to reload the page.
   void Reload();
 
   // WebKit::WebPlugin implementation.
   virtual WebKit::WebPluginContainer* container() const OVERRIDE;
   virtual bool initialize(WebKit::WebPluginContainer* container) OVERRIDE;
   virtual void destroy() OVERRIDE;
   virtual NPObject* scriptableObject() OVERRIDE;
   virtual bool supportsKeyboardFocus() const OVERRIDE;
+  virtual bool canProcessDrag() const OVERRIDE;
   virtual void paint(
       WebKit::WebCanvas* canvas,
       const WebKit::WebRect& rect) OVERRIDE;
   virtual void updateGeometry(
       const WebKit::WebRect& frame_rect,
       const WebKit::WebRect& clip_rect,
       const WebKit::WebVector<WebKit::WebRect>& cut_outs_rects,
       bool is_visible) OVERRIDE;
   virtual void updateFocus(bool focused) OVERRIDE;
   virtual void updateVisibility(bool visible) OVERRIDE;
@@ skipping 101 matching lines @@
   // the changes are not always obvious.  For example, there is a maximum
   // number of entries and earlier ones will automatically be pruned.
   int current_nav_entry_index_;
   int nav_entry_count_;
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_