Improving flat containers interface.

ash/fast_ink/fast_ink_view.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 ASH_FAST_INK_FAST_INK_VIEW_H_
 #define ASH_FAST_INK_FAST_INK_VIEW_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/containers/flat_map.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "cc/base/resource_id.h"
 #include "ui/views/view.h"
 
 namespace aura {
 class Window;
 }
 
 namespace cc {
 struct ReturnedResource;
 }
 
@@ skipping 43 matching lines @@
   std::unique_ptr<views::Widget> widget_;
   float scale_factor_ = 1.0f;
   std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer_;
   gfx::Rect buffer_damage_rect_;
   bool pending_update_buffer_ = false;
   gfx::Rect surface_damage_rect_;
   bool needs_update_surface_ = false;
   bool pending_draw_surface_ = false;
   std::unique_ptr<FastInkLayerTreeFrameSinkHolder> frame_sink_holder_;
   int next_resource_id_ = 1;
-  base::flat_map<int, std::unique_ptr<FastInkResource>> resources_;
+  base::flat_map<cc::ResourceId, std::unique_ptr<FastInkResource>> resources_;
   std::vector<std::unique_ptr<FastInkResource>> returned_resources_;
   base::WeakPtrFactory<FastInkView> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FastInkView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_FAST_INK_FAST_INK_VIEW_H_