cc: Async readback.

cc/output/gl_renderer_pixeltest.cc

 // Copyright 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 "cc/output/gl_renderer.h"
 
 #include "cc/layers/append_quads_data.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/test/pixel_test.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
@@ skipping 464 matching lines @@
   DrawFrame();
   EXPECT_TRUE(PixelsMatchReference(
       base::FilePath(FILE_PATH_LITERAL("background_filter.png")),
       ExactPixelComparator(true)));
 }
 
 TEST_F(GLRendererPixelTest, AntiAliasing) {
   gfx::Rect rect(0, 0, 200, 200);
 
   RenderPass::Id id(1, 1);
-  gfx::Transform transform_to_root;
-  scoped_ptr<RenderPass> pass =
-      CreateTestRenderPass(id, rect, transform_to_root);
+  scoped_ptr<RenderPass> pass = CreateTestRootRenderPass(id, rect);
 
   gfx::Transform red_content_to_target_transform;
   red_content_to_target_transform.Rotate(10);
   scoped_ptr<SharedQuadState> red_shared_state =
       CreateTestSharedQuadState(red_content_to_target_transform, rect);
 
   scoped_ptr<SolidColorDrawQuad> red = SolidColorDrawQuad::Create();
   red->SetNew(red_shared_state.get(), rect, SK_ColorRED);
 
   pass->quad_list.push_back(red.PassAs<DrawQuad>());
@@ skipping 23 matching lines @@
   renderer_->DrawFrame(&pass_list);
 
   EXPECT_TRUE(PixelsMatchReference(
       base::FilePath(FILE_PATH_LITERAL("anti_aliasing.png")),
       ExactPixelComparator(true)));
 }
 #endif
 
 }  // namespace
 }  // namespace cc