Replacing SurfaceReferenceBase and SequenceSurfaceReference with Closures

cc/surfaces/surface_reference_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 CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_
 #define CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_reference_owner.h"
 
 namespace cc {
 
-class SurfaceReferenceBase;
+class ScopedSurfaceReferenceBase;
 
 // Creates surface references. Returns an object of type
-// SurfaceReferenceBase which holds on to its corresponding
+// ScopedSurfaceReferenceBase which holds on to its corresponding
 // surface reference until destruction. The referenced surface
 // will be kept alive as long as there is a reference to it.
 class SurfaceReferenceFactory
     : public base::RefCountedThreadSafe<SurfaceReferenceFactory> {
  public:
-  virtual std::unique_ptr<SurfaceReferenceBase> CreateReference(
+  virtual std::unique_ptr<ScopedSurfaceReferenceBase> CreateReference(
       SurfaceReferenceOwner* owner,
       const SurfaceId& surface_id) const = 0;
 
   SurfaceReferenceFactory() = default;
 
  protected:
   virtual ~SurfaceReferenceFactory() = default;
 
  private:
-  friend class SurfaceReferenceBase;
+  friend class ScopedSurfaceReferenceBase;
   friend class base::RefCountedThreadSafe<SurfaceReferenceFactory>;
 
-  virtual void DestroyReference(SurfaceReferenceBase* surface_ref) const = 0;
+  virtual void DestroyReference(
+      ScopedSurfaceReferenceBase* surface_ref) const = 0;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceReferenceFactory);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_