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

chrome/browser/renderer_host/backing_store_x.h

Index: chrome/browser/renderer_host/backing_store_x.h
diff --git a/chrome/browser/renderer_host/backing_store_x.h b/chrome/browser/renderer_host/backing_store_x.h
index 283c19f5e6536c1fc078570814693d234c413ae2..2fce04f38fc28d6458e08c08a765316113725194 100644
--- a/chrome/browser/renderer_host/backing_store_x.h
+++ b/chrome/browser/renderer_host/backing_store_x.h
@@ -51,7 +51,8 @@ class BackingStoreX : public BackingStore {
   virtual size_t MemorySize();
   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);