Re-land: exo: Take blending into account when setting opaque property.

components/exo/surface_unittest.cc

 // Copyright 2015 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 "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "components/exo/buffer.h"
@@ skipping 188 matching lines @@
 TEST_F(SurfaceTest, SetBlendMode) {
   gfx::Size buffer_size(1, 1);
   std::unique_ptr<Buffer> buffer(
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
   std::unique_ptr<Surface> surface(new Surface);
 
   surface->Attach(buffer.get());
   surface->SetBlendMode(SkXfermode::kSrc_Mode);
   surface->Commit();
 
-  EXPECT_FALSE(surface->window()->layer()->fills_bounds_opaquely());
-
   const cc::DelegatedFrameData* frame_data = GetFrameFromSurface(surface.get());
   ASSERT_EQ(1u, frame_data->render_pass_list.size());
   ASSERT_EQ(1u, frame_data->render_pass_list.back()->quad_list.size());
   EXPECT_FALSE(frame_data->render_pass_list.back()
                    ->quad_list.back()
                    ->ShouldDrawWithBlending());
 }
 
 TEST_F(SurfaceTest, SetAlpha) {
   gfx::Size buffer_size(1, 1);
   std::unique_ptr<Buffer> buffer(
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
   std::unique_ptr<Surface> surface(new Surface);
 
   surface->Attach(buffer.get());
   surface->SetAlpha(0.5f);
   surface->Commit();
 }
 
 TEST_F(SurfaceTest, Commit) {
   std::unique_ptr<Surface> surface(new Surface);
 
   // Calling commit without a buffer should succeed.
   surface->Commit();
 }
 
 }  // namespace
 }  // namespace exo