On Windows, create a new TransportDIB::Handle struct which includes the file

chrome/browser/renderer_host/render_process_host.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 #pragma once
 
 #include <set>
 
@@ skipping 198 matching lines @@
   // tests or single-process mode, this will actually represent the current
   // process.
   //
   // NOTE: this is not necessarily valid immediately after calling Init, as
   // Init starts the process asynchronously.  It's guaranteed to be valid after
   // the first IPC arrives.
   virtual base::ProcessHandle GetHandle() = 0;
 
   // Transport DIB functions ---------------------------------------------------
 
-  // Return the TransportDIB for the given id. On Linux, this can involve
-  // mapping shared memory. On Mac, the shared memory is created in the browser
-  // process and the cached metadata is returned. On Windows, this involves
-  // duplicating the handle from the remote process.  The RenderProcessHost
-  // still owns the returned DIB.
-  virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id) = 0;
+  // Return the TransportDIB for the given id. On Windows and Linux, this may
+  // involve mapping the TransportDIB. On Mac, the shared memory is created in
+  // the browser process and the cached metadata is returned. The
+  // RenderProcessHost still owns the returned DIB.
+  virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id,
+                                        TransportDIB::Handle dib_handle) = 0;
 
   // Static management functions -----------------------------------------------
 
   // Flag to run the renderer in process.  This is primarily
   // for debugging purposes.  When running "in process", the
   // browser maintains a single RenderProcessHost which communicates
   // to a RenderProcess which is instantiated in the same process
   // with the Browser.  All IPC between the Browser and the
   // Renderer is the same, it's just not crossing a process boundary.
   static bool run_renderer_in_process() {
@@ skipping 78 matching lines @@
 // Factory object for RenderProcessHosts. Using this factory allows tests to
 // swap out a different one to use a TestRenderProcessHost.
 class RenderProcessHostFactory {
  public:
   virtual ~RenderProcessHostFactory() {}
   virtual RenderProcessHost* CreateRenderProcessHost(
       Profile* profile) const = 0;
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_