Add support for (de)serializing LayerSelectionBound.

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("//testing/test.gni")
 
 component("cc") {
   sources = [
     "animation/animation.cc",
     "animation/animation.h",
@@ skipping 758 matching lines @@
     "base/region_unittest.cc",
     "base/rolling_time_delta_history_unittest.cc",
     "base/rtree_unittest.cc",
     "base/simple_enclosed_region_unittest.cc",
     "base/tiling_data_unittest.cc",
     "base/unique_notifier_unittest.cc",
     "debug/frame_timing_tracker_unittest.cc",
     "debug/layer_tree_debug_state_unittest.cc",
     "debug/micro_benchmark_controller_unittest.cc",
     "debug/rendering_stats_unittest.cc",
+    "input/layer_selection_bound_unittest.cc",
     "input/scroll_state_unittest.cc",
     "input/top_controls_manager_unittest.cc",
     "layers/delegated_frame_provider_unittest.cc",
     "layers/delegated_frame_resource_collection_unittest.cc",
     "layers/delegated_renderer_layer_impl_unittest.cc",
     "layers/delegated_renderer_layer_unittest.cc",
     "layers/heads_up_display_layer_impl_unittest.cc",
     "layers/heads_up_display_unittest.cc",
     "layers/io_surface_layer_impl_unittest.cc",
     "layers/layer_impl_unittest.cc",
@@ skipping 190 matching lines @@
     "//ui/gl",
     "//ui/gl:test_support",
   ]
 
   if (is_android) {
     isolate_file = "cc_perftests.isolate"
   }
 }
 # When adding support for isolates, please have a look at run-time dependencies
 # in the cc_unittests_run target in cc_tests.gyp.