Implement AnimationEffectTimingReadOnly interface

third_party/WebKit/Source/core/animation/BUILD.gn

 # Copyright 2016 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("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("animation") {
   split_count = 5
 
   sources = [
     "Animation.cpp",
     "Animation.h",
     "AnimationClock.cpp",
     "AnimationClock.h",
     "AnimationEffectReadOnly.cpp",
     "AnimationEffectReadOnly.h",
     "AnimationEffectTiming.cpp",
     "AnimationEffectTiming.h",
+    "AnimationEffectTimingReadOnly.cpp",
+    "AnimationEffectTimingReadOnly.h",
     "AnimationInputHelpers.cpp",
     "AnimationInputHelpers.h",
     "AnimationStack.cpp",
     "AnimationStack.h",
     "AnimationTimeline.cpp",
     "AnimationTimeline.h",
     "BasicShapeInterpolationFunctions.cpp",
     "BasicShapeInterpolationFunctions.h",
     "BorderImageLengthBoxPropertyFunctions.h",
     "CSSBasicShapeInterpolationType.cpp",
@@ skipping 229 matching lines @@
     "css/CSSTimingData.h",
     "css/CSSTransitionData.cpp",
     "css/CSSTransitionData.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }