cc: Convert non-const reference arguments to pointers.

cc/output/delegating_renderer.cc

Index: cc/output/delegating_renderer.cc
diff --git a/cc/output/delegating_renderer.cc b/cc/output/delegating_renderer.cc
index d6d24c2c8ee8a860bc528f032a40678cbb4a0eac..997b69962e94d47b02131add17074f38cbe3fbb9 100644
--- a/cc/output/delegating_renderer.cc
+++ b/cc/output/delegating_renderer.cc
@@ -139,7 +139,7 @@ static ResourceProvider::ResourceId AppendToArray(
 }
 
 void DelegatingRenderer::DrawFrame(
-    RenderPassList& render_passes_in_draw_order) {
+    RenderPassList* render_passes_in_draw_order) {
   TRACE_EVENT0("cc", "DelegatingRenderer::DrawFrame");
 
   CompositorFrame out_frame;
@@ -151,15 +151,15 @@ void DelegatingRenderer::DrawFrame(
   ResourceProvider::ResourceIdArray resources;
   DrawQuad::ResourceIteratorCallback append_to_array =
       base::Bind(&AppendToArray, &resources);
-  for (size_t i = 0; i < render_passes_in_draw_order.size(); ++i) {
-    RenderPass* render_pass = render_passes_in_draw_order[i];
+  for (size_t i = 0; i < render_passes_in_draw_order->size(); ++i) {
+    RenderPass* render_pass = render_passes_in_draw_order->at(i);
     for (size_t j = 0; j < render_pass->quad_list.size(); ++j)
       render_pass->quad_list[j]->IterateResources(append_to_array);
   }
 
   // Move the render passes and resources into the |out_frame|.
   DelegatedFrameData& out_data = *out_frame.delegated_frame_data;
-  out_data.render_pass_list.swap(render_passes_in_draw_order);
+  out_data.render_pass_list.swap(*render_passes_in_draw_order);
   resource_provider_->PrepareSendToParent(resources, &out_data.resource_list);
 
   output_surface_->SendFrameToParentCompositor(&out_frame);