Change WGC3DInProcessCBImpl factories to return a base class pointer.

content/common/gpu/client/gl_helper_unittests.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 <stdio.h>
 #include <cmath>
 #include <string>
 #include <vector>
 
 #include <GLES2/gl2.h>
@@ skipping 41 matching lines @@
 const char *kQualityNames[] = {
   "best",
   "good",
   "fast",
 };
 
 class GLHelperTest : public testing::Test {
  protected:
   virtual void SetUp() {
     WebGraphicsContext3D::Attributes attributes;
-    context_.reset(
-        webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl::
-        CreateOffscreenContext(attributes));
+    context_ = webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl::
+        CreateOffscreenContext(attributes);
     context_->makeContextCurrent();
     helper_.reset(new content::GLHelper(context_.get()));
     helper_scaling_.reset(new content::GLHelperScaling(
         context_.get(),
         helper_.get()));
   }
 
   virtual void TearDown() {
     helper_scaling_.reset(NULL);
     helper_.reset(NULL);
@@ skipping 1171 matching lines @@
 #endif
 #if defined(TOOLKIT_GTK)
   gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
 #endif
   gfx::GLSurface::InitializeOneOff();
 
   content::UnitTestTestSuite runner(suite);
   base::MessageLoop message_loop;
   return runner.Run();
 }