Revert of cc: Remove use of PassAs() and constructor-casting with scoped_ptr.

cc/output/renderer_unittest.cc

 // Copyright 2014 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 "cc/output/delegating_renderer.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/output_surface.h"
 #include "cc/test/fake_output_surface_client.h"
 #include "cc/test/fake_renderer_client.h"
 #include "cc/test/test_context_provider.h"
@@ skipping 20 matching lines @@
                                     OutputSurface* output_surface,
                                     ResourceProvider* resource_provider);
 
 template <>
 scoped_ptr<Renderer> CreateRenderer<DelegatingRenderer>(
     RendererClient* client,
     const LayerTreeSettings* settings,
     OutputSurface* output_surface,
     ResourceProvider* resource_provider) {
   return DelegatingRenderer::Create(
-      client, settings, output_surface, resource_provider);
+             client, settings, output_surface, resource_provider)
+      .PassAs<Renderer>();
 }
 
 template <>
 scoped_ptr<Renderer> CreateRenderer<GLRenderer>(
     RendererClient* client,
     const LayerTreeSettings* settings,
     OutputSurface* output_surface,
     ResourceProvider* resource_provider) {
   return GLRenderer::Create(
-      client, settings, output_surface, resource_provider, NULL, 0);
+             client, settings, output_surface, resource_provider, NULL, 0)
+      .PassAs<Renderer>();
 }
 
 template <typename T>
 class RendererTest : public ::testing::Test {
  protected:
   virtual void SetUp() {
     context_provider_ =
         new MockContextProvider(TestWebGraphicsContext3D::Create());
     output_surface_.reset(new OutputSurface(context_provider_));
     output_surface_->BindToClient(&output_surface_client_);
@@ skipping 21 matching lines @@
   EXPECT_CALL(*(this->context_provider_.get()), DeleteCachedResources())
       .Times(1);
 
   EXPECT_TRUE(this->renderer_->visible());
   this->renderer_->SetVisible(false);
   EXPECT_FALSE(this->renderer_->visible());
 }
 
 }  // namespace
 }  // namespace cc