cc: Don't add new tilings while syncing a tiling.

cc/resources/tile_manager_perftest.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 "base/time/time.h"
 #include "cc/debug/lap_timer.h"
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_priority.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
@@ skipping 259 matching lines @@
 
   void RunManageTilesTest(const std::string& test_name,
                           int layer_count,
                           int approximate_tile_count_per_layer) {
     std::vector<LayerImpl*> layers =
         CreateLayers(layer_count, approximate_tile_count_per_layer);
     timer_.Reset();
     do {
       host_impl_.UpdateCurrentFrameTime();
       for (unsigned i = 0; i < layers.size(); ++i)
-        layers[i]->UpdateTilePriorities();
+        layers[i]->UpdateTiles();
 
       GlobalStateThatImpactsTilePriority global_state(GlobalStateForTest());
       tile_manager()->ManageTiles(global_state);
       tile_manager()->UpdateVisibleTiles();
       timer_.NextLap();
       host_impl_.ResetCurrentFrameTimeForNextFrame();
     } while (!timer_.HasTimeLimitExpired());
 
     perf_test::PrintResult(
         "manage_tiles", "", test_name, timer_.LapsPerSecond(), "runs/s", true);
@@ skipping 39 matching lines @@
 
   RunRasterIteratorTest("2_16", 16);
   RunRasterIteratorTest("2_32", 32);
   RunRasterIteratorTest("2_64", 64);
   RunRasterIteratorTest("2_128", 128);
 }
 
 }  // namespace
 
 }  // namespace cc