Implement OSMesa image transport for TOUCH_UI builds

content/browser/renderer_host/render_widget_host_view.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #pragma once
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
@@ skipping 226 matching lines @@
   // not enabled, this is a no-op, so it is always safe to call.
   // Returns true if the event was handled by IME.
   virtual bool PostProcessEventForPluginIme(
       const NativeWebKeyboardEvent& event) = 0;
 
   // Methods associated with GPU-accelerated plug-in instances.
   virtual gfx::PluginWindowHandle AllocateFakePluginWindowHandle(
       bool opaque, bool root) = 0;
   virtual void DestroyFakePluginWindowHandle(
       gfx::PluginWindowHandle window) = 0;
-  virtual void AcceleratedSurfaceSetIOSurface(
+  // Gives a new surface to be used.
+  virtual void AcceleratedSurfaceNew(
       gfx::PluginWindowHandle window,
       int32 width,
       int32 height,
       uint64 io_surface_identifier) = 0;
   virtual void AcceleratedSurfaceSetTransportDIB(
       gfx::PluginWindowHandle window,
       int32 width,
       int32 height,
       TransportDIB::Handle transport_dib) = 0;
   // |window| and |surface_id| indicate which accelerated surface's
   // buffers swapped. |renderer_id|, |route_id| and
   // |swap_buffers_count| are used to formulate a reply to the GPU
   // process to prevent it from getting too far ahead. They may all be
   // zero, in which case no flow control is enforced; this case is
   // currently used for accelerated plugins.
   virtual void AcceleratedSurfaceBuffersSwapped(
       gfx::PluginWindowHandle window,
       uint64 surface_id,
       int renderer_id,
       int32 route_id,
       int gpu_host_id,
       uint64 swap_buffers_count) = 0;
   virtual void GpuRenderingStateDidChange() = 0;
 #endif
 
 #if defined(TOUCH_UI)
-  virtual void AcceleratedSurfaceSetIOSurface(
-      int32 width, int32 height, uint64 surface_id) = 0;
+  // Begin using a new AcceleratedSurface in the browser's view host.
+  // This may create a new internal surface or simply switch to using a new
+  // surface_id, depending on the implementation.
+  virtual void AcceleratedSurfaceNew(
+      int32 width,
+      int32 height,
+      uint64* surface_id,
+      TransportDIB::Handle *surface_handle) = 0;
   virtual void AcceleratedSurfaceBuffersSwapped(
       uint64 surface_id,
       int32 route_id,
       int gpu_host_id) = 0;
   virtual void AcceleratedSurfaceRelease(uint64 surface_id) = 0;
 #endif
 
 #if defined(TOOLKIT_USES_GTK)
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id) = 0;
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id) = 0;
@@ skipping 62 matching lines @@
 
   // The current reserved area in view coordinates where contents should not be
   // rendered to draw the resize corner, sidebar mini tabs etc.
   gfx::Rect reserved_rect_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostView);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_