Revert of Move compositor InputHandler from RenderViewImpl to RenderWidget.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index c0e1d88d2cb44dd744de3c30dd049eca1bebf392..bb055354ccfa160cd09d334117d72d0034bef08e 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -593,7 +593,6 @@
       renderer_scheduler_(std::move(scheduler)),
       main_message_loop_(std::move(main_message_loop)),
       categorized_worker_pool_(new CategorizedWorkerPool()),
-      is_scroll_animator_enabled_(false),
       renderer_binding_(this) {
   scoped_refptr<base::SingleThreadTaskRunner> test_task_counter;
   DCHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
@@ -1585,10 +1584,6 @@
 
 bool RenderThreadImpl::IsThreadedAnimationEnabled() {
   return is_threaded_animation_enabled_;
-}
-
-bool RenderThreadImpl::IsScrollAnimatorEnabled() {
-  return is_scroll_animator_enabled_;
 }
 
 void RenderThreadImpl::OnRAILModeChanged(v8::RAILMode rail_mode) {
@@ -2066,7 +2061,6 @@
 
 void RenderThreadImpl::CreateView(mojom::CreateViewParamsPtr params) {
   CompositorDependencies* compositor_deps = this;
-  is_scroll_animator_enabled_ = params->web_preferences.enable_scroll_animator;
   // When bringing in render_view, also bring in webkit's glue and jsbindings.
   RenderViewImpl::Create(compositor_deps, *params,
                          RenderWidget::ShowCallback());