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

chrome/browser/renderer_host/render_process_host.h

Index: chrome/browser/renderer_host/render_process_host.h
diff --git a/chrome/browser/renderer_host/render_process_host.h b/chrome/browser/renderer_host/render_process_host.h
index a5fd378259468165ea9cb709f22d702553e016ac..38cb5f293bde7ec0cfe87aa7a17d1c7a3dc1006b 100644
--- a/chrome/browser/renderer_host/render_process_host.h
+++ b/chrome/browser/renderer_host/render_process_host.h
@@ -216,12 +216,12 @@ class RenderProcessHost : public IPC::Channel::Sender,
 
   // 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 -----------------------------------------------