Rename cc::ResourceProvider::ResourceId to cc::ResourceId and move it to its own file.

cc/layers/layer_impl.h

 // Copyright 2011 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_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 237 matching lines @@
                            AppendQuadsData* append_quads_data) {}
   virtual void DidDraw(ResourceProvider* resource_provider);
 
   // Verify that the resource ids in the quad are valid.
   void ValidateQuadResources(DrawQuad* quad) const {
 #if DCHECK_IS_ON()
     ValidateQuadResourcesInternal(quad);
 #endif
   }
 
-  virtual void GetContentsResourceId(ResourceProvider::ResourceId* resource_id,
+  virtual void GetContentsResourceId(ResourceId* resource_id,
                                      gfx::Size* resource_size) const;
 
   virtual bool HasDelegatedContent() const;
   virtual bool HasContributingDelegatedRenderPasses() const;
   virtual RenderPassId FirstContributingRenderPassId() const;
   virtual RenderPassId NextContributingRenderPassId(RenderPassId id) const;
 
   virtual void NotifyTileStateChanged(const Tile* tile) {}
 
   virtual ScrollbarLayerImplBase* ToScrollbarLayer();
@@ skipping 561 matching lines @@
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_