Implement OSMesa image transport for TOUCH_UI builds

content/common/gpu/gpu_messages.h

 // Copyright (c) 2011 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include <vector>
 #include <string>
 
@@ skipping 13 matching lines @@
 #define IPC_MESSAGE_START GpuMsgStart
 
 IPC_STRUCT_BEGIN(GPUCreateCommandBufferConfig)
   IPC_STRUCT_MEMBER(int32, share_group_id)
   IPC_STRUCT_MEMBER(std::string, allowed_extensions)
   IPC_STRUCT_MEMBER(std::vector<int>, attribs)
   IPC_STRUCT_MEMBER(GURL, active_url)
 IPC_STRUCT_END()
 
 #if defined(OS_MACOSX)
-IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceSetIOSurface_Params)
+IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceNew_Params)
   IPC_STRUCT_MEMBER(int32, renderer_id)
   IPC_STRUCT_MEMBER(int32, render_view_id)
   IPC_STRUCT_MEMBER(gfx::PluginWindowHandle, window)
   IPC_STRUCT_MEMBER(int32, width)
   IPC_STRUCT_MEMBER(int32, height)
   IPC_STRUCT_MEMBER(uint64, identifier)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params)
   IPC_STRUCT_MEMBER(int32, renderer_id)
   IPC_STRUCT_MEMBER(int32, render_view_id)
   IPC_STRUCT_MEMBER(gfx::PluginWindowHandle, window)
   IPC_STRUCT_MEMBER(uint64, surface_id)
   IPC_STRUCT_MEMBER(int32, route_id)
   IPC_STRUCT_MEMBER(uint64, swap_buffers_count)
 IPC_STRUCT_END()
 #endif
 
 #if defined(TOUCH_UI)
-IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceSetIOSurface_Params)
+IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceNew_Params)
   IPC_STRUCT_MEMBER(int32, renderer_id)
   IPC_STRUCT_MEMBER(int32, render_view_id)
   IPC_STRUCT_MEMBER(int32, width)
   IPC_STRUCT_MEMBER(int32, height)
   IPC_STRUCT_MEMBER(uint64, identifier)
   IPC_STRUCT_MEMBER(int32, route_id)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params)
   IPC_STRUCT_MEMBER(int32, renderer_id)
@@ skipping 86 matching lines @@
 #if defined(TOOLKIT_USES_GTK) && !defined(TOUCH_UI) || defined(OS_WIN)
 // Tells the GPU process that the browser process has finished resizing the
 // view.
 IPC_MESSAGE_CONTROL2(GpuMsg_ResizeViewACK,
                      int32 /* renderer_id */,
                      int32 /* command_buffer_id */)
 #endif
 
 #if defined(TOUCH_UI)
 // Tells the GPU process that it's safe to start rendering to the surface.
-IPC_MESSAGE_ROUTED1(AcceleratedSurfaceMsg_SetSurfaceACK,
-                    uint64 /* surface_id */)
+IPC_MESSAGE_ROUTED2(AcceleratedSurfaceMsg_NewACK,
+                    uint64 /* surface_id */,
+                    TransportDIB::Handle /* shared memory buffer */)
 
 // Tells the GPU process that the browser process handled the swap
 // buffers request with the given number.
 IPC_MESSAGE_ROUTED0(AcceleratedSurfaceMsg_BuffersSwappedACK)
 #endif
 
 #if defined(OS_MACOSX)
 // Tells the GPU process that the browser process handled the swap
 // buffers request with the given number. Note that it is possible
 // for the browser process to coalesce frames; it is not guaranteed
@@ skipping 70 matching lines @@
 // Resize the window that is being drawn into. It's important that this
 // resize be synchronized with the swapping of the front and back buffers.
 IPC_MESSAGE_CONTROL4(GpuHostMsg_ResizeView,
                      int32 /* renderer_id */,
                      int32 /* render_view_id */,
                      int32 /* command_buffer_route_id */,
                      gfx::Size /* size */)
 #endif
 
 #if defined(OS_MACOSX) || defined(TOUCH_UI)
-// This message is sent from the GPU process to the browser to indicate that a
-// new backing store was allocated. The renderer ID and render view ID are
-// needed in order to uniquely identify the RenderWidgetHostView on the
-// browser side.
-IPC_MESSAGE_CONTROL1(GpuHostMsg_AcceleratedSurfaceSetIOSurface,
-                     GpuHostMsg_AcceleratedSurfaceSetIOSurface_Params)
+// This message is sent from the GPU process to the browser to notify about a
+// new or resized surface in the GPU.  The browser allocates any resources
+// needed for it on its end and replies with an ACK containing any shared
+// resources/identifiers to be used in the GPU.
+IPC_MESSAGE_CONTROL1(GpuHostMsg_AcceleratedSurfaceNew,
+                     GpuHostMsg_AcceleratedSurfaceNew_Params)
 
 // This message notifies the browser process that the renderer
 // swapped the buffers associated with the given "window", which
 // should cause the browser to redraw the compositor's contents.
 IPC_MESSAGE_CONTROL1(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
                      GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params)
 #endif
 
 #if defined(TOUCH_UI)
 // Tells the browser to release whatever resources are associated with
@@ skipping 242 matching lines @@
 
 // Confirm decoder has been reset.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_ResetDone)
 
 // Decoder has faced end of stream marker in the stream.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderHostMsg_EndOfStream)
 
 // Video decoder has encountered an error.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_ErrorNotification,
                     uint32) /* Error ID */