Remove some dead BrowserPlugin and OOPIF compositing code.

content/common/frame_messages.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/frame_message_enums.h"
@@ skipping 317 matching lines @@
   IPC_STRUCT_MEMBER(bool, right_aligned)
 
   // Whether this is a multi-select popup.
   IPC_STRUCT_MEMBER(bool, allow_multiple_selection)
 IPC_STRUCT_END()
 #endif
 
 // -----------------------------------------------------------------------------
 // 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 embedding frame to notify it of
-// a new texture available for compositing. When the buffer has finished
-// presenting, a FrameHostMsg_BuffersSwappedACK should be sent back to
-// gpu host that produced this buffer.
-//
-// This is used in the non-ubercomp HW accelerated compositing path.
-IPC_MESSAGE_ROUTED1(FrameMsg_BuffersSwapped,
-                    FrameMsg_BuffersSwapped_Params /* params */)
-
 // Notifies the embedding frame that a new CompositorFrame is ready to be
 // presented. When the frame finishes presenting, a matching
 // FrameHostMsg_CompositorFrameSwappedACK should be sent back to the
 // RenderViewHost that was produced the CompositorFrame.
 //
 // This is used in the ubercomp compositing path.
 IPC_MESSAGE_ROUTED1(FrameMsg_CompositorFrameSwapped,
                     FrameMsg_CompositorFrameSwapped_Params /* params */)
 
 // Notifies the embedding frame that the process rendering the child frame's
@@ skipping 283 matching lines @@
 // necessary, and will return a handle to the channel on success.
 // On error an empty string is returned.
 IPC_SYNC_MESSAGE_CONTROL4_2(FrameHostMsg_OpenChannelToPlugin,
                             int /* render_frame_id */,
                             GURL /* url */,
                             GURL /* page_url */,
                             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.
-//
-// See FrameMsg_BuffersSwapped.
-IPC_MESSAGE_ROUTED1(FrameHostMsg_BuffersSwappedACK,
-                    FrameHostMsg_BuffersSwappedACK_Params /* params */)
-
 // Acknowledge that we presented an ubercomp frame.
 //
 // See FrameMsg_CompositorFrameSwapped
 IPC_MESSAGE_ROUTED1(FrameHostMsg_CompositorFrameSwappedACK,
                     FrameHostMsg_CompositorFrameSwappedACK_Params /* params */)
 
 // Provides the result from handling BeforeUnload.  |proceed| matches the return
 // value of the frame's beforeunload handler: true if the user decided to
 // proceed with leaving the page.
 IPC_MESSAGE_ROUTED3(FrameHostMsg_BeforeUnload_ACK,
@@ skipping 104 matching lines @@
 IPC_MESSAGE_ROUTED0(FrameHostMsg_DidFirstVisuallyNonEmptyPaint)
 
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 
 // Message to show/hide a popup menu using native controls.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif