cc: Add image decode control in the compositor.

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 807 matching lines @@
     "resources/scoped_resource_unittest.cc",
     "resources/video_resource_updater_unittest.cc",
     "scheduler/begin_frame_source_unittest.cc",
     "scheduler/compositor_timing_history_unittest.cc",
     "scheduler/delay_based_time_source_unittest.cc",
     "scheduler/scheduler_state_machine_unittest.cc",
     "scheduler/scheduler_unittest.cc",
     "test/layer_tree_json_parser_unittest.cc",
     "test/ordered_simple_task_runner_unittest.cc",
     "test/test_web_graphics_context_3d_unittest.cc",
+    "tiles/image_decode_controller_unittest.cc",
     "tiles/picture_layer_tiling_set_unittest.cc",
     "tiles/picture_layer_tiling_unittest.cc",
     "tiles/tile_manager_unittest.cc",
     "tiles/tile_priority_unittest.cc",
     "trees/blocking_task_runner_unittest.cc",
     "trees/damage_tracker_unittest.cc",
     "trees/layer_tree_host_common_unittest.cc",
     "trees/layer_tree_host_impl_unittest.cc",
     "trees/layer_tree_host_pixeltest_blending.cc",
     "trees/layer_tree_host_pixeltest_filters.cc",
@@ skipping 105 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.