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

cc/test/fake_delegated_renderer_layer_impl.cc

Index: cc/test/fake_delegated_renderer_layer_impl.cc
diff --git a/cc/test/fake_delegated_renderer_layer_impl.cc b/cc/test/fake_delegated_renderer_layer_impl.cc
index 1154a0e0b58b9d6a5b52c4a6911a770cb02e12fa..5a9bcd50b6a24c5d29d50001bc60a52ebbb0dea2 100644
--- a/cc/test/fake_delegated_renderer_layer_impl.cc
+++ b/cc/test/fake_delegated_renderer_layer_impl.cc
@@ -25,10 +25,9 @@ scoped_ptr<LayerImpl> FakeDelegatedRendererLayerImpl::CreateLayerImpl(
   return FakeDelegatedRendererLayerImpl::Create(tree_impl, id());
 }
 
-static ResourceProvider::ResourceId AddResourceToFrame(
-    ResourceProvider* resource_provider,
-    DelegatedFrameData* frame,
-    ResourceProvider::ResourceId resource_id) {
+static ResourceId AddResourceToFrame(ResourceProvider* resource_provider,
+                                     DelegatedFrameData* frame,
+                                     ResourceId resource_id) {
   TransferableResource resource;
   resource.id = resource_id;
   resource.mailbox_holder.texture_target =