cc: Remove low quality mode and cleanup tile versions.

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 350 matching lines @@
     "resources/prioritized_resource.cc",
     "resources/prioritized_resource.h",
     "resources/prioritized_resource_manager.cc",
     "resources/prioritized_resource_manager.h",
     "resources/prioritized_tile_set.cc",
     "resources/prioritized_tile_set.h",
     "resources/priority_calculator.cc",
     "resources/priority_calculator.h",
     "resources/raster_buffer.cc",
     "resources/raster_buffer.h",
-    "resources/raster_mode.cc",
-    "resources/raster_mode.h",
     "resources/raster_tile_priority_queue.cc",
     "resources/raster_tile_priority_queue.h",
     "resources/raster_worker_pool.cc",
     "resources/raster_worker_pool.h",
     "resources/rasterizer.cc",
     "resources/rasterizer.h",
     "resources/release_callback.h",
     "resources/resource.cc",
     "resources/resource.h",
     "resources/resource_format.cc",
@@ skipping 438 matching lines @@
     "//gpu/command_buffer/common:gles2_utils",
     "//media",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//testing/perf",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }