Implement Element.scrollIntoView for scroll-behavior: smooth.

third_party/WebKit/Source/platform/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 1243 matching lines @@
     "scheduler/renderer/web_frame_scheduler_impl.cc",
     "scheduler/renderer/web_frame_scheduler_impl.h",
     "scheduler/renderer/web_view_scheduler_impl.cc",
     "scheduler/renderer/web_view_scheduler_impl.h",
     "scheduler/renderer/webthread_impl_for_renderer_scheduler.cc",
     "scheduler/renderer/webthread_impl_for_renderer_scheduler.h",
     "scheduler/utility/webthread_impl_for_utility_thread.cc",
     "scroll/MainThreadScrollingReason.h",
     "scroll/ProgrammaticScrollAnimator.cpp",
     "scroll/ProgrammaticScrollAnimator.h",
+    "scroll/ProgrammaticScrollCoordinator.cpp",
+    "scroll/ProgrammaticScrollCoordinator.h",
     "scroll/ScrollAnimator.cpp",
     "scroll/ScrollAnimator.h",
     "scroll/ScrollAnimatorBase.cpp",
     "scroll/ScrollAnimatorBase.h",
     "scroll/ScrollAnimatorCompositorCoordinator.cpp",
     "scroll/ScrollAnimatorCompositorCoordinator.h",
     "scroll/ScrollStateData.h",
     "scroll/ScrollTypes.h",
     "scroll/ScrollableArea.cpp",
     "scroll/ScrollableArea.h",
@@ skipping 836 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }