Defer compositor context creation to the thread.

cc/raster/scoped_gpu_raster_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/raster/scoped_gpu_raster.h"
 #include "cc/test/test_context_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 
 class ScopedGpuRasterTest : public testing::Test {
  public:
   ScopedGpuRasterTest() {}
 };
 
 // Releasing ScopedGpuRaster should restore GL_UNPACK_ALIGNMENT == 4.
 TEST(ScopedGpuRasterTest, RestoresUnpackAlignment) {
   scoped_refptr<TestContextProvider> provider = TestContextProvider::Create();
-  EXPECT_TRUE(provider->BindToCurrentThread());
   gpu::gles2::GLES2Interface* gl = provider->ContextGL();
   GLint unpack_alignment = 0;
   gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
   EXPECT_EQ(4, unpack_alignment);
 
   {
     std::unique_ptr<ScopedGpuRaster> scoped_gpu_raster(
         new ScopedGpuRaster(provider.get()));
     gl->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
     gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
     EXPECT_EQ(1, unpack_alignment);
   }
 
   gl->GetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_alignment);
   EXPECT_EQ(4, unpack_alignment);
 }
 
 }  // namespace
 }  // namespace cc