Put the Pepper stuff in the content namespace.

content/renderer/render_widget_fullscreen_pepper.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/renderer/pepper/pepper_parent_context_provider.h"
@@ skipping 11 matching lines @@
 
 }  // namespace ppapi
 }  // namespace webkit
 
 // A RenderWidget that hosts a fullscreen pepper plugin. This provides a
 // FullscreenContainer that the plugin instance can callback into to e.g.
 // invalidate rects.
 class RenderWidgetFullscreenPepper :
     public RenderWidgetFullscreen,
     public webkit::ppapi::FullscreenContainer,
-    public PepperParentContextProvider,
+    public content::PepperParentContextProvider,
     public WebGraphicsContext3DSwapBuffersClient {
  public:
   static RenderWidgetFullscreenPepper* Create(
       int32 opener_id,
       webkit::ppapi::PluginInstance* plugin,
       const GURL& active_url);
 
   // WebGraphicscontext3DSwapBuffersClient implementation
   virtual void OnViewContextSwapBuffersPosted() OVERRIDE;
   virtual void OnViewContextSwapBuffersComplete() OVERRIDE;
@@ skipping 64 matching lines @@
   WebGraphicsContext3DCommandBufferImpl* context_;
   unsigned int buffer_;
   unsigned int program_;
 
   base::WeakPtrFactory<RenderWidgetFullscreenPepper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetFullscreenPepper);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_FULLSCREEN_PEPPER_H_