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

chrome/browser/renderer_host/mock_render_process_host.h

Index: chrome/browser/renderer_host/mock_render_process_host.h
diff --git a/chrome/browser/renderer_host/mock_render_process_host.h b/chrome/browser/renderer_host/mock_render_process_host.h
index 232725b2835159ff5127e36ca361ff4d5483bfd2..494a45c56550a21ba456be9e961eeae33187ba12 100644
--- a/chrome/browser/renderer_host/mock_render_process_host.h
+++ b/chrome/browser/renderer_host/mock_render_process_host.h
@@ -53,7 +53,8 @@ class MockRenderProcessHost : public RenderProcessHost {
   virtual bool SendWithTimeout(IPC::Message* msg, int timeout_ms);
   virtual base::ProcessHandle GetHandle();
 
-  virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id);
+  virtual TransportDIB* GetTransportDIB(TransportDIB::Id dib_id,
+                                        TransportDIB::Handle dib_handle);
 
   // IPC::Channel::Sender via RenderProcessHost.
   virtual bool Send(IPC::Message* msg);