cc: Unify the occlusion access by adding an ability to scale transform.

cc/BUILD.gn

 # Copyright 2014 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.
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
     "animation/animation_curve.cc",
     "animation/animation_curve.h",
@@ skipping 748 matching lines @@
     "trees/layer_tree_host_unittest_damage.cc",
     "trees/layer_tree_host_unittest_delegated.cc",
     "trees/layer_tree_host_unittest_occlusion.cc",
     "trees/layer_tree_host_unittest_no_message_loop.cc",
     "trees/layer_tree_host_unittest_picture.cc",
     "trees/layer_tree_host_unittest_proxy.cc",
     "trees/layer_tree_host_unittest_scroll.cc",
     "trees/layer_tree_host_unittest_video.cc",
     "trees/layer_tree_impl_unittest.cc",
     "trees/occlusion_tracker_unittest.cc",
+    "trees/occlusion_unittest.cc",
     "trees/tree_synchronizer_unittest.cc",
 
     # Surfaces test files.
     "surfaces/surface_aggregator_test_helpers.cc",
     "surfaces/surface_aggregator_test_helpers.h",
     "surfaces/surface_aggregator_unittest.cc",
     "surfaces/surface_unittest.cc",
     "surfaces/surfaces_pixeltest.cc",
 
     # Setup.
@@ skipping 44 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//media",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }