Implement OSMesa image transport for TOUCH_UI builds

content/browser/renderer_host/render_widget_host_view.h

Index: content/browser/renderer_host/render_widget_host_view.h
diff --git a/content/browser/renderer_host/render_widget_host_view.h b/content/browser/renderer_host/render_widget_host_view.h
index 3456a67708a87c4a1fe463dcb44f2d8b2fff4047..7b177541c6abd4658395d0883a88c109bdb36176 100644
--- a/content/browser/renderer_host/render_widget_host_view.h
+++ b/content/browser/renderer_host/render_widget_host_view.h
@@ -244,7 +244,8 @@ class RenderWidgetHostView {
       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,
@@ -271,8 +272,14 @@ class RenderWidgetHostView {
 #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,