Revert of cc: Delete all the RendererCapabilities.

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 2a53ef6d0628899ba3bfd37d73595a9262f9f54a..cf9206c939011ef6b4965eb93e2b2745ee3abb70 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -152,6 +152,7 @@
   DCHECK(task_runner_provider_->IsMainThread());
   DCHECK(layer_tree_host_->output_surface_lost());
   DCHECK(output_surface_creation_requested_);
+  renderer_capabilities_for_main_thread_ = RendererCapabilities();
 
   bool success;
   {
@@ -174,6 +175,12 @@
   }
 }
 
+const RendererCapabilities& SingleThreadProxy::GetRendererCapabilities() const {
+  DCHECK(task_runner_provider_->IsMainThread());
+  DCHECK(!layer_tree_host_->output_surface_lost());
+  return renderer_capabilities_for_main_thread_;
+}
+
 void SingleThreadProxy::SetNeedsAnimate() {
   TRACE_EVENT0("cc", "SingleThreadProxy::SetNeedsAnimate");
   DCHECK(task_runner_provider_->IsMainThread());
@@ -448,6 +455,12 @@
 
 void SingleThreadProxy::DidCompletePageScaleAnimationOnImplThread() {
   layer_tree_host_->DidCompletePageScaleAnimation();
+}
+
+void SingleThreadProxy::UpdateRendererCapabilitiesOnImplThread() {
+  DCHECK(task_runner_provider_->IsImplThread());
+  renderer_capabilities_for_main_thread_ =
+      layer_tree_host_impl_->GetRendererCapabilities().MainThreadCapabilities();
 }
 
 void SingleThreadProxy::DidLoseOutputSurfaceOnImplThread() {