Removing GL context rate limiting feature and related wrappers

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 61a963e0e1b563e8469bb3d88bdc29e4674ba80e..8ab3bc272403321e277ea26dd450517350247d7a 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -598,16 +598,6 @@ void SingleThreadProxy::CompositeImmediately(base::TimeTicks frame_begin_time) {
   }
 }
 
-void SingleThreadProxy::ForceSerializeOnSwapBuffers() {
-  {
-    DebugScopedSetImplThread impl(this);
-    if (layer_tree_host_impl_->renderer()) {
-      DCHECK(!layer_tree_host_->output_surface_lost());
-      layer_tree_host_impl_->renderer()->DoNoOp();
-    }
-  }
-}
-
 bool SingleThreadProxy::SupportsImplScrolling() const {
   return false;
 }