cc: Remove unused proto conversion code.

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 136 matching lines @@
     "layers/layer_collections.h",
     "layers/layer_impl.cc",
     "layers/layer_impl.h",
     "layers/layer_impl_test_properties.cc",
     "layers/layer_impl_test_properties.h",
     "layers/layer_iterator.h",
     "layers/layer_list_iterator.cc",
     "layers/layer_list_iterator.h",
     "layers/layer_position_constraint.cc",
     "layers/layer_position_constraint.h",
-    "layers/layer_proto_converter.cc",
-    "layers/layer_proto_converter.h",
     "layers/layer_sticky_position_constraint.cc",
     "layers/layer_sticky_position_constraint.h",
     "layers/layer_utils.cc",
     "layers/layer_utils.h",
     "layers/nine_patch_layer.cc",
     "layers/nine_patch_layer.h",
     "layers/nine_patch_layer_impl.cc",
     "layers/nine_patch_layer_impl.h",
     "layers/paint_properties.h",
     "layers/painted_scrollbar_layer.cc",
@@ skipping 695 matching lines @@
     "input/scrollbar_animation_controller_linear_fade_unittest.cc",
     "input/scrollbar_animation_controller_thinning_unittest.cc",
     "ipc/cc_param_traits_unittest.cc",
     "ipc/struct_traits_unittest.cc",
     "layers/heads_up_display_layer_impl_unittest.cc",
     "layers/heads_up_display_unittest.cc",
     "layers/layer_impl_unittest.cc",
     "layers/layer_iterator_unittest.cc",
     "layers/layer_list_iterator_unittest.cc",
     "layers/layer_position_constraint_unittest.cc",
-    "layers/layer_proto_converter_unittest.cc",
     "layers/layer_unittest.cc",
     "layers/layer_utils_unittest.cc",
     "layers/nine_patch_layer_impl_unittest.cc",
     "layers/nine_patch_layer_unittest.cc",
     "layers/painted_scrollbar_layer_impl_unittest.cc",
     "layers/painted_scrollbar_layer_unittest.cc",
     "layers/picture_image_layer_unittest.cc",
     "layers/picture_layer_impl_unittest.cc",
     "layers/picture_layer_unittest.cc",
     "layers/render_surface_impl_unittest.cc",
@@ skipping 204 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",
   ]
 }