Add WebDragData to blink::WebView::dragtargetDrop

content/browser/renderer_host/render_view_host_impl.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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 102 matching lines @@
   void DragTargetDragEnter(const DropData& drop_data,
                            const gfx::Point& client_pt,
                            const gfx::Point& screen_pt,
                            blink::WebDragOperationsMask operations_allowed,
                            int key_modifiers) override;
   void DragTargetDragOver(const gfx::Point& client_pt,
                           const gfx::Point& screen_pt,
                           blink::WebDragOperationsMask operations_allowed,
                           int key_modifiers) override;
   void DragTargetDragLeave() override;
-  void DragTargetDrop(const gfx::Point& client_pt,
+  void DragTargetDrop(const DropData& drop_data,
+                      bool is_drop_data_valid,

[aelias_OOO_until_Jul13, 2016/03/02 00:03:19]

How about instead adding a boolean member to DropData class equivalent to
WebDropData::m_valid?  The classes may as well be symmetrical since they're
supposed to represent the same information.

[hush (inactive), 2016/03/02 02:35:11]

Of course, I will do that. 

+                      const gfx::Point& client_pt,
                       const gfx::Point& screen_pt,
                       int key_modifiers) override;
   void EnableAutoResize(const gfx::Size& min_size,
                         const gfx::Size& max_size) override;
   void DisableAutoResize(const gfx::Size& new_size) override;
   void EnablePreferredSizeMode() override;
   void ExecuteMediaPlayerActionAtLocation(
       const gfx::Point& location,
       const blink::WebMediaPlayerAction& action) override;
   void ExecutePluginActionAtLocation(
@@ skipping 297 matching lines @@
   bool render_view_ready_on_process_launch_;
 
   base::WeakPtrFactory<RenderViewHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_