Convert //cc from scoped_ptr to std::unique_ptr.

cc/test/test_gpu_memory_buffer_manager.h

 // 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.
 
 #ifndef CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_
 #define CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include "base/macros.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 
 namespace cc {
 
 class TestGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
  public:
   TestGpuMemoryBufferManager();
   ~TestGpuMemoryBufferManager() override;
 
   void SetGpuMemoryBufferIsInUseByMacOSWindowServer(
       gfx::GpuMemoryBuffer* gpu_memory_buffer,
       bool in_use);
 
   // Overridden from gpu::GpuMemoryBufferManager:
-  scoped_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
+  std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       int32_t surface_id) override;
-  scoped_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromHandle(
+  std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromHandle(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::BufferFormat format) override;
   gfx::GpuMemoryBuffer* GpuMemoryBufferFromClientBuffer(
       ClientBuffer buffer) override;
   void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
                                const gpu::SyncToken& sync_token) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestGpuMemoryBufferManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_