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

cc/raster/staging_buffer_pool.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 CC_RASTER_STAGING_BUFFER_POOL_H_
 #define CC_RASTER_STAGING_BUFFER_POOL_H_
 
 #include <stdint.h>
 
 #include <deque>
+#include <memory>
 #include <set>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/time/time.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "cc/output/context_provider.h"
 #include "cc/resources/resource_provider.h"
 
@@ skipping 12 matching lines @@
   StagingBuffer(const gfx::Size& size, ResourceFormat format);
   ~StagingBuffer();
 
   void DestroyGLResources(gpu::gles2::GLES2Interface* gl);
   void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
                     ResourceFormat format,
                     bool is_free) const;
 
   const gfx::Size size;
   const ResourceFormat format;
-  scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer;
+  std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer;
   base::TimeTicks last_usage;
   unsigned texture_id;
   unsigned image_id;
   unsigned query_id;
   uint64_t content_id;
 };
 
 class CC_EXPORT StagingBufferPool
     : public base::trace_event::MemoryDumpProvider {
  public:
   ~StagingBufferPool() final;
 
-  static scoped_ptr<StagingBufferPool> Create(
+  static std::unique_ptr<StagingBufferPool> Create(
       base::SequencedTaskRunner* task_runner,
       ResourceProvider* resource_provider,
       bool use_partial_raster,
       int max_staging_buffer_usage_in_bytes);
   void Shutdown();
 
   // Overridden from base::trace_event::MemoryDumpProvider:
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
-  scoped_ptr<StagingBuffer> AcquireStagingBuffer(const Resource* resource,
-                                                 uint64_t previous_content_id);
-  void ReleaseStagingBuffer(scoped_ptr<StagingBuffer> staging_buffer);
+  std::unique_ptr<StagingBuffer> AcquireStagingBuffer(
+      const Resource* resource,
+      uint64_t previous_content_id);
+  void ReleaseStagingBuffer(std::unique_ptr<StagingBuffer> staging_buffer);
 
  private:
   StagingBufferPool(base::SequencedTaskRunner* task_runner,
                     ResourceProvider* resource_provider,
                     bool use_partial_raster,
                     int max_staging_buffer_usage_in_bytes);
 
   void AddStagingBuffer(const StagingBuffer* staging_buffer,
                         ResourceFormat format);
   void RemoveStagingBuffer(const StagingBuffer* staging_buffer);
   void MarkStagingBufferAsFree(const StagingBuffer* staging_buffer);
   void MarkStagingBufferAsBusy(const StagingBuffer* staging_buffer);
 
   base::TimeTicks GetUsageTimeForLRUBuffer();
   void ScheduleReduceMemoryUsage();
   void ReduceMemoryUsage();
   void ReleaseBuffersNotUsedSince(base::TimeTicks time);
 
-  scoped_ptr<base::trace_event::ConvertableToTraceFormat> StateAsValue() const;
+  std::unique_ptr<base::trace_event::ConvertableToTraceFormat> StateAsValue()
+      const;
   void StagingStateAsValueInto(
       base::trace_event::TracedValue* staging_state) const;
 
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   ResourceProvider* const resource_provider_;
   const bool use_partial_raster_;
 
   mutable base::Lock lock_;
   // |lock_| must be acquired when accessing the following members.
   using StagingBufferSet = std::set<const StagingBuffer*>;
   StagingBufferSet buffers_;
-  using StagingBufferDeque = std::deque<scoped_ptr<StagingBuffer>>;
+  using StagingBufferDeque = std::deque<std::unique_ptr<StagingBuffer>>;
   StagingBufferDeque free_buffers_;
   StagingBufferDeque busy_buffers_;
   const int max_staging_buffer_usage_in_bytes_;
   int staging_buffer_usage_in_bytes_;
   int free_staging_buffer_usage_in_bytes_;
   const base::TimeDelta staging_buffer_expiration_delay_;
   bool reduce_memory_usage_pending_;
   base::Closure reduce_memory_usage_callback_;
 
   base::WeakPtrFactory<StagingBufferPool> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StagingBufferPool);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_STAGING_BUFFER_POOL_H_