Change WGC3DInProcessCBImpl factories to return a base class pointer.

webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.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 WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 #define WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 
 #if defined(ENABLE_GPU)
 
 #include <vector>
@@ skipping 35 matching lines @@
 class WEBKIT_GPU_EXPORT WebGraphicsContext3DInProcessCommandBufferImpl
     : public NON_EXPORTED_BASE(WebKit::WebGraphicsContext3D) {
  public:
   typedef scoped_ptr< ::gpu::GpuMemoryBuffer> GpuMemoryBufferCreator(
       int width, int height);
 
   // Must be called before any WebGraphicsContext3DInProcessCommandBufferImpl
   // instances are created. Default value is false.
   static void EnableVirtualizedContext();
 
-  static WebGraphicsContext3DInProcessCommandBufferImpl*
-      CreateViewContext(
-          const WebKit::WebGraphicsContext3D::Attributes& attributes,
-          gfx::AcceleratedWidget window);
+  static scoped_ptr<WebKit::WebGraphicsContext3D> CreateViewContext(
+      const WebKit::WebGraphicsContext3D::Attributes& attributes,
+      gfx::AcceleratedWidget window);
 
-  static WebGraphicsContext3DInProcessCommandBufferImpl*
-      CreateOffscreenContext(
-          const WebKit::WebGraphicsContext3D::Attributes& attributes);
+  static scoped_ptr<WebKit::WebGraphicsContext3D> CreateOffscreenContext(
+      const WebKit::WebGraphicsContext3D::Attributes& attributes);
 
   static void SetGpuMemoryBufferCreator(GpuMemoryBufferCreator* creator);
 
   virtual ~WebGraphicsContext3DInProcessCommandBufferImpl();
 
   //----------------------------------------------------------------------
   // WebGraphicsContext3D methods
   virtual bool makeContextCurrent();
 
   virtual int width();
@@ skipping 522 matching lines @@
   void FlipVertically(uint8* framebuffer,
                       unsigned int width,
                       unsigned int height);
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // defined(ENABLE_GPU)
 #endif  // WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_