ui: Add gfx::BufferUsage::SCANOUT_CPU_READ_WRITE.

gpu/ipc/service/gpu_memory_buffer_factory_test_template.h

 // 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.
 
 // This file defines tests that implementations of GpuMemoryBufferFactory should
 // pass in order to be conformant.
 
 #ifndef GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_TEST_TEMPLATE_H_
 #define GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_TEST_TEMPLATE_H_
 
@@ skipping 14 matching lines @@
 
 TYPED_TEST_P(GpuMemoryBufferFactoryTest, CreateGpuMemoryBuffer) {
   const gfx::GpuMemoryBufferId kBufferId(1);
   const int kClientId = 1;
 
   gfx::Size buffer_size(2, 2);
 
   for (auto format : gfx::GetBufferFormatsForTesting()) {
     gfx::BufferUsage usages[] = {
         gfx::BufferUsage::GPU_READ, gfx::BufferUsage::SCANOUT,
+        gfx::BufferUsage::SCANOUT_CPU_READ_WRITE,
         gfx::BufferUsage::GPU_READ_CPU_READ_WRITE,
         gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT};
     for (auto usage : usages) {
       if (!IsNativeGpuMemoryBufferConfigurationSupported(format, usage))
         continue;
 
       gfx::GpuMemoryBufferHandle handle =
           TestFixture::factory_.CreateGpuMemoryBuffer(kBufferId, buffer_size,
                                                       format, usage, kClientId,
                                                       gpu::kNullSurfaceHandle);
       EXPECT_NE(handle.type, gfx::EMPTY_BUFFER);
       TestFixture::factory_.DestroyGpuMemoryBuffer(kBufferId, kClientId);
     }
   }
 }
 
 // The GpuMemoryBufferFactoryTest test case verifies behavior that is expected
 // from a GpuMemoryBuffer factory in order to be conformant.
 REGISTER_TYPED_TEST_CASE_P(GpuMemoryBufferFactoryTest, CreateGpuMemoryBuffer);
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_TEST_TEMPLATE_H_