cc: Implement tiling iterator based on pyramid sequence.

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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
@@ skipping 827 matching lines @@
     "animation/keyframed_animation_curve_unittest.cc",
     "animation/scroll_offset_animation_curve_unittest.cc",
     "animation/transform_operations_unittest.cc",
     "base/contiguous_container_unittest.cc",
     "base/delayed_unique_notifier_unittest.cc",
     "base/float_quad_unittest.cc",
     "base/histograms_unittest.cc",
     "base/index_rect_unittest.cc",
     "base/list_container_unittest.cc",
     "base/math_util_unittest.cc",
+    "base/pyramid_sequence_unittest.cc",
     "base/random_access_list_container_unittest.cc",
     "base/region_unittest.cc",
     "base/rolling_time_delta_history_unittest.cc",
     "base/rtree_unittest.cc",
     "base/simple_enclosed_region_unittest.cc",
     "base/spiral_iterator_unittest.cc",
     "base/tiling_data_unittest.cc",
     "base/unique_notifier_unittest.cc",
     "blimp/compositor_state_deserializer_unittest.cc",
     "blimp/layer_tree_host_remote_unittest.cc",
@@ skipping 235 matching lines @@
   data = [
     "test/data/",
 
     # Needed for isolate script to execute.
     "//testing/scripts/common.py",
     "//testing/xvfb.py",
     "//testing/scripts/run_gtest_perf_test.py",
     "//tools/perf/generate_legacy_perf_dashboard_json.py",
   ]
 }