Handle the ViewHostMsg_RunFileChooser IPC message which is sent by content(renderer) in RVH and

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2011 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_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
 class RenderProcessHost;
 class RenderViewHost;
 class SkBitmap;
 class TabContents;
 struct ViewHostMsg_CreateWindow_Params;
 struct ViewHostMsg_FrameNavigate_Params;
 struct WebDropData;
 struct WebMenuItem;
 class WebKeyboardEvent;
 struct WebPreferences;
+struct ViewHostMsg_RunFileChooser_Params;
 
 namespace content {
 class BrowserContext;
 }
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
@@ skipping 307 matching lines @@
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {}
 
   // Notifications about mouse events in this view.  This is useful for
   // implementing global 'on hover' features external to the view.
   virtual void HandleMouseMove() {}
   virtual void HandleMouseDown() {}
   virtual void HandleMouseLeave() {}
   virtual void HandleMouseUp() {}
   virtual void HandleMouseActivate() {}
 
+  // Called when a file selection is to be done.
+  virtual void RunFileChooser(
+      RenderViewHost* render_view_host,
+      const ViewHostMsg_RunFileChooser_Params& params) {}
+
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_