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

chrome/browser/renderer_host/backing_store.h

Index: chrome/browser/renderer_host/backing_store.h
diff --git a/chrome/browser/renderer_host/backing_store.h b/chrome/browser/renderer_host/backing_store.h
index 53d02884906fb025d73742c2870c9a71c4559022..4bcbd19509eb7a83cebd22158cf1c81d433b2928 100644
--- a/chrome/browser/renderer_host/backing_store.h
+++ b/chrome/browser/renderer_host/backing_store.h
@@ -48,7 +48,8 @@ class BackingStore {
   // DonePaintingToBackingStore().
   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) = 0;