Consolidate RenderWidgetHost::CopyFromBackingStore and RenderWidgetHost::AsyncCopyFromBackingStore.

content/browser/renderer_host/render_widget_host_view_gtk.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_gtk.h"
 
 // If this gets included after the gtk headers, then a bunch of compiler
 // errors happen because of a "#define Status int" in Xlib.h, which interacts
 // badly with net::URLRequestStatus::Status.
 #include "content/common/view_messages.h"
@@ skipping 970 matching lines @@
 }
 
 BackingStore* RenderWidgetHostViewGtk::AllocBackingStore(
     const gfx::Size& size) {
   gint depth = gdk_visual_get_depth(gtk_widget_get_visual(view_.get()));
   return new BackingStoreGtk(host_, size,
                              ui::GetVisualFromGtkWidget(view_.get()),
                              depth);
 }
 
-bool RenderWidgetHostViewGtk::CopyFromCompositingSurface(
-    const gfx::Size& size,
-    skia::PlatformCanvas* output) {
-  // TODO(mazda): Implement this.
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void RenderWidgetHostViewGtk::AsyncCopyFromCompositingSurface(
+void RenderWidgetHostViewGtk::CopyFromCompositingSurface(
     const gfx::Size& size,
     skia::PlatformCanvas* output,
     base::Callback<void(bool)> callback) {
   // TODO(mazda): Implement this.
   NOTIMPLEMENTED();
   callback.Run(false);
 }
 
 void RenderWidgetHostViewGtk::AcceleratedSurfaceBuffersSwapped(
     const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
@@ skipping 396 matching lines @@
   return new RenderWidgetHostViewGtk(widget);
 }
 
 // static
 void content::RenderWidgetHostViewPort::GetDefaultScreenInfo(
     WebKit::WebScreenInfo* results) {
   GdkWindow* gdk_window =
       gdk_display_get_default_group(gdk_display_get_default());
   content::GetScreenInfoFromNativeWindow(gdk_window, results);
 }