Rename SurfaceIdAllocator to LocalSurfaceIdAllocator

cc/surfaces/local_surface_id_allocator.h

+// Copyright 2017 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_LOCAL_SURFACE_ID_ALLOCATOR_H_
+#define CC_SURFACES_LOCAL_SURFACE_ID_ALLOCATOR_H_
+
+#include <stdint.h>
+
+#include "base/macros.h"
+#include "cc/surfaces/surface_id.h"
+#include "cc/surfaces/surfaces_export.h"
+
+namespace cc {
+
+// This is a helper class for generating local surface IDs for a single
+// FrameSink. This is not threadsafe, to use from multiple threads wrap this
+// class in a mutex.
+class CC_SURFACES_EXPORT LocalSurfaceIdAllocator {
+ public:
+  LocalSurfaceIdAllocator();
+  ~LocalSurfaceIdAllocator();
+
+  LocalSurfaceId GenerateId();
+
+ private:
+  uint32_t next_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(LocalSurfaceIdAllocator);
+};
+
+}  // namespace cc
+
+#endif  // CC_SURFACES_LOCAL_SURFACE_ID_ALLOCATOR_H_