Make SingleThreadProxy a SchedulerClient

cc/scheduler/scheduler_settings.cc

 // Copyright 2013 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/scheduler/scheduler_settings.h"
 
+#include "cc/trees/layer_tree_settings.h"
+
 namespace cc {
 
 SchedulerSettings::SchedulerSettings()
     : impl_side_painting(false),
       timeout_and_draw_when_animation_checkerboards(true),
       maximum_number_of_failed_draws_before_draw_is_forced_(3),
       using_synchronous_renderer_compositor(false),
       throttle_frame_production(true),
       switch_to_low_latency_if_possible(false) {}
 
+SchedulerSettings::SchedulerSettings(const LayerTreeSettings& settings)
+    : impl_side_painting(settings.impl_side_painting),
+      timeout_and_draw_when_animation_checkerboards(
+          settings.timeout_and_draw_when_animation_checkerboards),
+      maximum_number_of_failed_draws_before_draw_is_forced_(
+          settings.maximum_number_of_failed_draws_before_draw_is_forced_),
+      using_synchronous_renderer_compositor(
+          settings.using_synchronous_renderer_compositor),
+      throttle_frame_production(settings.throttle_frame_production),
+      switch_to_low_latency_if_possible(false) {}
+
 SchedulerSettings::~SchedulerSettings() {}
 
 }  // namespace cc