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

chrome/common/gpu_messages_internal.h

Index: chrome/common/gpu_messages_internal.h
diff --git a/chrome/common/gpu_messages_internal.h b/chrome/common/gpu_messages_internal.h
index 184d8f4249436fdef08601c8b4e7feddc4000268..deb48f82b6185ef218273c16df0a63785fd2e02b 100644
--- a/chrome/common/gpu_messages_internal.h
+++ b/chrome/common/gpu_messages_internal.h
@@ -74,13 +74,11 @@ IPC_BEGIN_MESSAGES(Gpu)
   // Updates the backing store with the given bitmap. The GPU process will send
   // back a GpuHostMsg_PaintToBackingStore_ACK after the paint is complete to
   // let the caller know the TransportDIB can be freed or reused.
-  IPC_MESSAGE_ROUTED4(GpuMsg_PaintToBackingStore,
-                      base::ProcessId, /* process */
-                      TransportDIB::Id, /* bitmap */
+  IPC_MESSAGE_ROUTED3(GpuMsg_PaintToBackingStore,
+                      TransportDIB::Handle, /* bitmap_handle */
                       gfx::Rect, /* bitmap_rect */
                       std::vector<gfx::Rect>) /* copy_rects */
 
-
   IPC_MESSAGE_ROUTED4(GpuMsg_ScrollBackingStore,
                       int, /* dx */
                       int, /* dy */
@@ -95,9 +93,8 @@ IPC_BEGIN_MESSAGES(Gpu)
   // Updates the video layer with the given YUV data. The GPU process will send
   // back a GpuHostMsg_PaintToVideoLayer_ACK after the paint is complete to
   // let the caller know the TransportDIB can be freed or reused.
-  IPC_MESSAGE_ROUTED3(GpuMsg_PaintToVideoLayer,
-                      base::ProcessId, /* process */
-                      TransportDIB::Id, /* bitmap */
+  IPC_MESSAGE_ROUTED2(GpuMsg_PaintToVideoLayer,
+                      TransportDIB::Handle, /* bitmap_handle */
                       gfx::Rect) /* bitmap_rect */
 
 IPC_END_MESSAGES(Gpu)