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

chrome/browser/renderer_host/backing_store_proxy.h

Index: chrome/browser/renderer_host/backing_store_proxy.h
diff --git a/chrome/browser/renderer_host/backing_store_proxy.h b/chrome/browser/renderer_host/backing_store_proxy.h
index 610f7ef0009df3d8e55df6fc21b195f09d817bbc..a9a3c3e1f2d8a8210d918d103cc3da7fbc64e7f1 100644
--- a/chrome/browser/renderer_host/backing_store_proxy.h
+++ b/chrome/browser/renderer_host/backing_store_proxy.h
@@ -21,7 +21,8 @@ class BackingStoreProxy : public BackingStore,
 
   // BackingStore implementation.
   virtual void PaintToBackingStore(RenderProcessHost* process,
-                                   TransportDIB::Id bitmap,
+                                   TransportDIB::Id dib_id,
+                                   TransportDIB::Handle dib_handle,
                                    const gfx::Rect& bitmap_rect,
                                    const std::vector<gfx::Rect>& copy_rects,
                                    bool* painted_synchronously);