Convert //ash from scoped_ptr to std::unique_ptr

ash/mus/stub_context_factory.h

 // Copyright 2016 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 ASH_MUS_STUB_CONTEXT_FACTORY_H_
 #define ASH_MUS_STUB_CONTEXT_FACTORY_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/compositor/compositor.h"
 
 namespace cc {
 class SingleThreadTaskGraphRunner;
 }
 
 namespace ash {
 namespace sysui {
 
 class StubContextFactory : public ui::ContextFactory {
  public:
   StubContextFactory();
   ~StubContextFactory() override;
 
  private:
   // ui::ContextFactory implementation.
   void CreateOutputSurface(base::WeakPtr<ui::Compositor> compositor) override;
-  scoped_ptr<ui::Reflector> CreateReflector(
+  std::unique_ptr<ui::Reflector> CreateReflector(
       ui::Compositor* mirrored_compositor,
       ui::Layer* mirroring_layer) override;
   void RemoveReflector(ui::Reflector* reflector) override;
   scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider() override;
   void RemoveCompositor(ui::Compositor* compositor) override;
   bool DoesCreateTestContexts() override;
   uint32_t GetImageTextureTarget(gfx::BufferFormat format,
                                  gfx::BufferUsage usage) override;
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
-  scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
+  std::unique_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
 
   uint32_t next_surface_id_namespace_;
-  scoped_ptr<cc::SingleThreadTaskGraphRunner> task_graph_runner_;
+  std::unique_ptr<cc::SingleThreadTaskGraphRunner> task_graph_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(StubContextFactory);
 };
 
 }  // namespace sysui
 }  // namespace ash
 
 #endif  // ASH_MUS_STUB_CONTEXT_FACTORY_H_