Change WGC3DInProcessCBImpl factories to return a base class pointer.

webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.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 "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 760 matching lines @@
   {
     AutoLockAndDecoderDetachThread lock(g_decoder_lock.Get(),
                                         g_all_shared_contexts.Get());
     DCHECK(g_all_shared_contexts.Get().empty());
   }
 #endif  // !defined(NDEBUG)
   g_use_virtualized_gl_context = true;
 }
 
 // static
-WebGraphicsContext3DInProcessCommandBufferImpl*
+scoped_ptr<WebKit::WebGraphicsContext3D>
 WebGraphicsContext3DInProcessCommandBufferImpl::CreateViewContext(
     const WebKit::WebGraphicsContext3D::Attributes& attributes,
     gfx::AcceleratedWidget window) {
-  if (!gfx::GLSurface::InitializeOneOff())
-    return NULL;
-  return new WebGraphicsContext3DInProcessCommandBufferImpl(
-      attributes, false, window);
+  scoped_ptr<WebKit::WebGraphicsContext3D> context;
+  if (gfx::GLSurface::InitializeOneOff()) {
+    context.reset(new WebGraphicsContext3DInProcessCommandBufferImpl(
+      attributes, false, window));
+  }
+  return context.Pass();
 }
 
 // static
-WebGraphicsContext3DInProcessCommandBufferImpl*
+scoped_ptr<WebKit::WebGraphicsContext3D>
 WebGraphicsContext3DInProcessCommandBufferImpl::CreateOffscreenContext(
     const WebKit::WebGraphicsContext3D::Attributes& attributes) {
-  return new WebGraphicsContext3DInProcessCommandBufferImpl(
-      attributes, true, gfx::kNullAcceleratedWidget);
+  return make_scoped_ptr(new WebGraphicsContext3DInProcessCommandBufferImpl(
+      attributes, true, gfx::kNullAcceleratedWidget))
+      .PassAs<WebKit::WebGraphicsContext3D>();
 }
 
 WebGraphicsContext3DInProcessCommandBufferImpl::
     WebGraphicsContext3DInProcessCommandBufferImpl(
         const WebKit::WebGraphicsContext3D::Attributes& attributes,
         bool is_offscreen,
         gfx::AcceleratedWidget window)
     : is_offscreen_(is_offscreen),
       window_(window),
       initialized_(false),
@@ skipping 1172 matching lines @@
 DELEGATE_TO_GL_1(waitAsyncTexImage2DCHROMIUM, WaitAsyncTexImage2DCHROMIUM,
     WGC3Denum)
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::SetGpuMemoryBufferCreator(
     GpuMemoryBufferCreator* creator) {
   g_gpu_memory_buffer_creator = creator;
 }
 
 }  // namespace gpu
 }  // namespace webkit