UpdateContentsScale  944 cc/layers/tiled_layer_unittest.cc   layer->UpdateContentsScale(2.f);
UpdateContentsScale 1763 cc/layers/tiled_layer_unittest.cc   layer->UpdateContentsScale(1.5f);
UpdateContentsScale 1799 cc/layers/tiled_layer_unittest.cc   layer->UpdateContentsScale(1.3f);
UpdateContentsScale  119 cc/test/tiled_layer_test_common.h   void UpdateContentsScale(float ideal_contents_scale);