Make RenderPass::Id an isolated class

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index 506b02e6722a184380a15963428ecd5a137d7dde..0a8ad35bf906d0e12e55a0f77ada554bf86dcd1c 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -1154,7 +1154,7 @@ scoped_ptr<cc::CompositorFrame> MakeDelegatedFrame(float scale_factor,
 
   scoped_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
   pass->SetNew(
-      cc::RenderPass::Id(1, 1), gfx::Rect(size), damage, gfx::Transform());
+      cc::RenderPassId(1, 1), gfx::Rect(size), damage, gfx::Transform());
   frame->delegated_frame_data->render_pass_list.push_back(pass.Pass());
   return frame.Pass();
 }