Adding RenderWidgetHostViewChildFrame for OOPIF view.

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index 87f769b5fd0455b106a38bd6d9a7a4c54869ce94..62ac33d9ae8493b9dfffa6832f887620d63bb2ae 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -5,15 +5,40 @@
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
+#include "cc/output/begin_frame_args.h"
+#include "cc/output/compositor_frame.h"
+#include "cc/output/compositor_frame_ack.h"
 #include "content/common/content_export.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
+#include "url/gurl.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START FrameMsgStart
 
+// -----------------------------------------------------------------------------
+// Messages sent from the browser to the renderer.
+
+// When HW accelerated buffers are swapped in an out of process child frame
+// renderer, the message is forwarded to the top level frame renderer to
+// notify it of a new texture available for compositing.
+IPC_MESSAGE_ROUTED4(FrameMsg_ChildFrameBuffersSwapped,
+                    gfx::Size /* size */,
+                    std::string /* mailbox_name */,
+                    int /* route_id */,
+                    int /* gpu_host_id */)
+
+IPC_MESSAGE_ROUTED4(FrameMsg_ChildFrameCompositorFrameSwapped,
+                    cc::CompositorFrame /* frame */,
+                    int /* route_id */,
+                    uint32 /* output_surface_id */,
+                    int /* renderer_host_id */)
+
+// -----------------------------------------------------------------------------
+// Messages sent from the renderer to the browser.
+
 // Sent by the renderer when a child frame is created in the renderer. The
 // |parent_frame_id| and |frame_id| are NOT routing ids. They are
 // renderer-allocated identifiers used for tracking a frame's creation.
@@ -85,3 +110,13 @@ IPC_SYNC_MESSAGE_CONTROL4_2(FrameHostMsg_OpenChannelToPlugin,
                             std::string /* mime_type */,
                             IPC::ChannelHandle /* channel_handle */,
                             content::WebPluginInfo /* info */)
+
+
+// Acknowledge that we presented a HW buffer and provide a sync point
+// to specify the location in the command stream when the compositor
+// is no longer using it.
+IPC_MESSAGE_ROUTED4(FrameHostMsg_BuffersSwappedACK,
+                    std::string /* mailbox_name */,
+                    int /* route_id */,
+                    int /* gpu_host_id */,
+                    uint32 /* sync_point */)