cc: Update Main RendererCapabilities on DeferredInitialize

cc/output/renderer.cc

Index: cc/output/renderer.cc
diff --git a/cc/output/renderer.cc b/cc/output/renderer.cc
index 488039acd9e699a0b5fdb9c21f34e8628f1a66a5..f76a331ab7ae9a713006e22041ea2ffe1c67bca7 100644
--- a/cc/output/renderer.cc
+++ b/cc/output/renderer.cc
@@ -34,6 +34,18 @@ RendererCapabilities RendererCapabilitiesImpl::MainThreadCapabilities() const {
                               using_offscreen_context3d,
                               max_texture_size,
                               using_shared_memory_resources);
+
+}
+
+bool RendererCapabilitiesImpl::Equals(
+    const RendererCapabilities& main_caps) const {
+  return best_texture_format == main_caps.best_texture_format &&
+         allow_partial_texture_updates ==
+             main_caps.allow_partial_texture_updates &&
+         using_offscreen_context3d == main_caps.using_offscreen_context3d &&
+         max_texture_size == main_caps.max_texture_size &&
+         using_shared_memory_resources ==
+             main_caps.using_shared_memory_resources;
 }
 
 }  // namespace cc