Removing GL context rate limiting feature and related wrappers

cc/trees/single_thread_proxy.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/single_thread_proxy.h"
 
 #include "base/auto_reset.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/debug/benchmark_instrumentation.h"
@@ skipping 571 matching lines @@
 
     // DoComposite could abort, but because this is a synchronous composite
     // another draw will never be scheduled, so break remaining promises.
     layer_tree_host_impl_->active_tree()->BreakSwapPromises(
         SwapPromise::SWAP_FAILS);
 
     DidFinishImplFrame();
   }
 }
 
-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;
 }
 
 bool SingleThreadProxy::ShouldComposite() const {
   DCHECK(Proxy::IsImplThread());
   return layer_tree_host_impl_->visible() &&
          layer_tree_host_impl_->CanDraw();
 }
 
@@ skipping 290 matching lines @@
       << "DidFinishImplFrame called while not inside an impl frame!";
   inside_impl_frame_ = false;
 #endif
 }
 
 void SingleThreadProxy::SendBeginFramesToChildren(const BeginFrameArgs& args) {
   layer_tree_host_->SendBeginFramesToChildren(args);
 }
 
 }  // namespace cc