Rename SurfaceIdAllocator to LocalSurfaceIdAllocator

cc/surfaces/surface_id_allocator.cc

-// Copyright 2014 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.
-
-#include "cc/surfaces/surface_id_allocator.h"
-
-#include <stdint.h>
-
-#include "base/rand_util.h"
-#include "base/unguessable_token.h"
-
-namespace cc {
-
-SurfaceIdAllocator::SurfaceIdAllocator() : next_id_(1u) {}
-
-SurfaceIdAllocator::~SurfaceIdAllocator() {
-}
-
-LocalSurfaceId SurfaceIdAllocator::GenerateId() {
-  LocalSurfaceId id(next_id_, base::UnguessableToken::Create());
-  next_id_++;
-  return id;
-}
-
-}  // namespace cc