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

cc/trees/layer_tree_host_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_TREES_LAYER_TREE_HOST_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 455 matching lines @@
 
   bool page_scale_animation_active() const { return !!page_scale_animation_; }
 
   virtual void CreateUIResource(UIResourceId uid,
                                 const UIResourceBitmap& bitmap);
   // Deletes a UI resource.  May safely be called more than once.
   virtual void DeleteUIResource(UIResourceId uid);
   void EvictAllUIResources();
   bool EvictedUIResourcesExist() const;
 
-  virtual ResourceProvider::ResourceId ResourceIdForUIResource(
-      UIResourceId uid) const;
+  virtual ResourceId ResourceIdForUIResource(UIResourceId uid) const;
 
   virtual bool IsUIResourceOpaque(UIResourceId uid) const;
 
   struct UIResourceData {
-    ResourceProvider::ResourceId resource_id;
+    ResourceId resource_id;
     gfx::Size size;
     bool opaque;
   };
 
   void ScheduleMicroBenchmark(scoped_ptr<MicroBenchmarkImpl> benchmark);
 
   CompositorFrameMetadata MakeCompositorFrameMetadata() const;
   // Viewport rectangle and clip in nonflipped window space.  These rects
   // should only be used by Renderer subclasses to populate glViewport/glClip
   // and their software-mode equivalents.
@@ skipping 273 matching lines @@
   scoped_ptr<FrameTimingTracker> frame_timing_tracker_;
 
   scoped_ptr<Viewport> viewport_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_