Surface Synchronization: Distinguish between dependencies and references

ui/compositor/compositor.cc

 // Copyright (c) 2012 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 "ui/compositor/compositor.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <deque>
@@ skipping 108 matching lines @@
       command_line->HasSwitch(switches::kUIShowPaintRects);
   settings.initial_debug_state.show_property_changed_rects =
       command_line->HasSwitch(cc::switches::kUIShowPropertyChangedRects);
   settings.initial_debug_state.show_surface_damage_rects =
       command_line->HasSwitch(cc::switches::kUIShowSurfaceDamageRects);
   settings.initial_debug_state.show_screen_space_rects =
       command_line->HasSwitch(cc::switches::kUIShowScreenSpaceRects);
 
   settings.initial_debug_state.SetRecordRenderingStats(
       command_line->HasSwitch(cc::switches::kEnableGpuBenchmarking));
-  settings.needs_valid_local_surface_id =
+  settings.enable_surface_synchronization =
       command_line->HasSwitch(cc::switches::kEnableSurfaceSynchronization);
 
   settings.use_zero_copy = IsUIZeroCopyEnabled();
 
   if (command_line->HasSwitch(switches::kUIEnableRGBA4444Textures))
     settings.renderer_settings.preferred_tile_format = cc::RGBA_4444;
 
   settings.use_layer_lists =
       command_line->HasSwitch(cc::switches::kUIEnableLayerLists);
 
@@ skipping 430 matching lines @@
 void Compositor::TimeoutLocks() {
   // Make a copy, we're going to cause |active_locks_| to become
   // empty.
   std::vector<CompositorLock*> locks = active_locks_;
   for (auto* lock : locks)
     lock->TimeoutLock();
   DCHECK(active_locks_.empty());
 }
 
 }  // namespace ui