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

cc/test/test_gpu_memory_buffer_manager.h

Index: cc/test/test_gpu_memory_buffer_manager.h
diff --git a/cc/test/test_gpu_memory_buffer_manager.h b/cc/test/test_gpu_memory_buffer_manager.h
index 7448fc39dcc3d70fdc430596cbc227befd6fc1c3..ac805b8657359e59a5c33479c60246f54595f79a 100644
--- a/cc/test/test_gpu_memory_buffer_manager.h
+++ b/cc/test/test_gpu_memory_buffer_manager.h
@@ -20,12 +20,12 @@ class TestGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
       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;