Deliver IPC messages together with SwapCompositorFrame

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index 144430ad4ca7bd3ca4dd61a337b5d324ab872433..beece03382e262bff447185182599be5d5ab7a7a 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -1458,9 +1458,11 @@ IPC_MESSAGE_ROUTED1(
     ViewHostMsg_CompositorSurfaceBuffersSwapped,
     ViewHostMsg_CompositorSurfaceBuffersSwapped_Params /* params */)
 
-IPC_MESSAGE_ROUTED2(ViewHostMsg_SwapCompositorFrame,
-                    uint32 /* output_surface_id */,
-                    cc::CompositorFrame /* frame */)
+IPC_MESSAGE_ROUTED3(
+    ViewHostMsg_SwapCompositorFrame,
+    uint32 /* output_surface_id */,
+    cc::CompositorFrame /* frame */,
+    std::vector<IPC::Message> /* messages_to_deliver_with_frame */)
 
 // Sent by the compositor when a flinging animation is stopped.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_DidStopFlinging)
@@ -1574,10 +1576,6 @@ IPC_MESSAGE_ROUTED0(ViewHostMsg_WillInsertBody)
 IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateFaviconURL,
                     std::vector<content::FaviconURL> /* candidates */)
 
-// Sent once a paint happens after the first non empty layout. In other words
-// after the page has painted something.
-IPC_MESSAGE_ROUTED0(ViewHostMsg_DidFirstVisuallyNonEmptyPaint)
-
 // Sent by the renderer to the browser to start a vibration with the given
 // duration.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_Vibrate,