Add flag for drawing layers to screen with Ganesh

cc/test/pixel_test.cc

 // Copyright 2013 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/test/pixel_test.h"
 
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/gl_renderer.h"
@@ skipping 95 matching lines @@
     return false;
 
   // To rebaseline:
   // return WritePNGFile(*result_bitmap_, test_data_dir.Append(ref_file), true);
 
   return MatchesPNGFile(*result_bitmap_,
                         test_data_dir.Append(ref_file),
                         comparator);
 }
 
-void PixelTest::SetUpGLRenderer() {
+void PixelTest::SetUpGLRenderer(bool use_skia_gpu_backend) {
   CHECK(fake_client_);
   CHECK(gfx::InitializeGLBindings(gfx::kGLImplementationOSMesaGL));
 
   using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
   scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> context3d(
       WebGraphicsContext3DInProcessCommandBufferImpl::CreateOffscreenContext(
           WebKit::WebGraphicsContext3D::Attributes()));
   output_surface_.reset(new OutputSurface(
       context3d.PassAs<WebKit::WebGraphicsContext3D>()));
   resource_provider_ = ResourceProvider::Create(output_surface_.get(), 0);
   renderer_ = GLRenderer::Create(fake_client_.get(),
                                  output_surface_.get(),
                                  resource_provider_.get(),
-                                 0).PassAs<DirectRenderer>();
+                                 0,
+                                 use_skia_gpu_backend).PassAs<DirectRenderer>();
 
   scoped_refptr<webkit::gpu::ContextProviderInProcess> offscreen_contexts =
       webkit::gpu::ContextProviderInProcess::Create();
   ASSERT_TRUE(offscreen_contexts->BindToCurrentThread());
   resource_provider_->set_offscreen_context_provider(offscreen_contexts);
 }
 
 void PixelTest::SetUpSoftwareRenderer() {
   CHECK(fake_client_);
 
   scoped_ptr<SoftwareOutputDevice> device(new SoftwareOutputDevice());
   output_surface_.reset(new OutputSurface(device.Pass()));
   resource_provider_ = ResourceProvider::Create(output_surface_.get(), 0);
   renderer_ = SoftwareRenderer::Create(
       fake_client_.get(),
       output_surface_.get(),
       resource_provider_.get()).PassAs<DirectRenderer>();
 }
 
 }  // namespace cc