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

chrome/gpu/gpu_backing_store_glx.h

Index: chrome/gpu/gpu_backing_store_glx.h
diff --git a/chrome/gpu/gpu_backing_store_glx.h b/chrome/gpu/gpu_backing_store_glx.h
index 14b1f5fbb109214e77581785051a0b88b479dd24..af1ced56425f693c340e9f76bd5a781d46bbd5f7 100644
--- a/chrome/gpu/gpu_backing_store_glx.h
+++ b/chrome/gpu/gpu_backing_store_glx.h
@@ -36,8 +36,7 @@ class GpuBackingStoreGLX : public IPC::Channel::Listener {
 
  private:
   // Message handlers.
-  void OnPaintToBackingStore(base::ProcessId source_process_id,
-                             TransportDIB::Id id,
+  void OnPaintToBackingStore(TransportDIB::Handle dib_handle,
                              const gfx::Rect& bitmap_rect,
                              const std::vector<gfx::Rect>& copy_rects);
   void OnScrollBackingStore(int dx, int dy,