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

cc/layers/delegated_renderer_layer_impl.cc

Index: cc/layers/delegated_renderer_layer_impl.cc
diff --git a/cc/layers/delegated_renderer_layer_impl.cc b/cc/layers/delegated_renderer_layer_impl.cc
index 63039fb1cdca3cb809f5c7bc419c1cfb321cdd6b..2a211384c1af95de815d68f940948623bfcdbb1c 100644
--- a/cc/layers/delegated_renderer_layer_impl.cc
+++ b/cc/layers/delegated_renderer_layer_impl.cc
@@ -44,11 +44,11 @@ bool DelegatedRendererLayerImpl::HasContributingDelegatedRenderPasses() const {
   return render_passes_in_draw_order_.size() > 1;
 }
 
-static ResourceProvider::ResourceId ResourceRemapHelper(
+static ResourceId ResourceRemapHelper(
     bool* invalid_frame,
     const ResourceProvider::ResourceIdMap& child_to_parent_map,
     ResourceProvider::ResourceIdSet* resources_in_frame,
-    ResourceProvider::ResourceId id) {
+    ResourceId id) {
   ResourceProvider::ResourceIdMap::const_iterator it =
       child_to_parent_map.find(id);
   if (it == child_to_parent_map.end()) {
@@ -57,7 +57,7 @@ static ResourceProvider::ResourceId ResourceRemapHelper(
   }
 
   DCHECK_EQ(it->first, id);
-  ResourceProvider::ResourceId remapped_id = it->second;
+  ResourceId remapped_id = it->second;
   resources_in_frame->insert(id);
   return remapped_id;
 }