Remove runtime toggling of throttling frames

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 74b59c15932061d1ba3d75b8a89855a67949569a..27350291ec21f220d2c07b2b2c546c932817ce4e 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -118,14 +118,6 @@ void SingleThreadProxy::SetVisible(bool visible) {
     scheduler_on_impl_thread_->SetVisible(layer_tree_host_impl_->visible());
 }
 
-void SingleThreadProxy::SetThrottleFrameProduction(bool throttle) {
-  TRACE_EVENT1("cc", "SingleThreadProxy::SetThrottleFrameProduction",
-               "throttle", throttle);
-  DebugScopedSetImplThread impl(task_runner_provider_);
-  if (scheduler_on_impl_thread_)
-    scheduler_on_impl_thread_->SetThrottleFrameProduction(throttle);
-}
-
 void SingleThreadProxy::RequestNewOutputSurface() {
   DCHECK(task_runner_provider_->IsMainThread());
   DCHECK(layer_tree_host_->output_surface_lost());