Revert of Avoid two targeting phases in aura client-lib and EventProcessor.

ui/views/widget/root_view.cc

Index: ui/views/widget/root_view.cc
diff --git a/ui/views/widget/root_view.cc b/ui/views/widget/root_view.cc
index a9926a687c85156f522c08e1707e821f85c817e1..d2455488a7870c1f7a8cf6b19bb97bc009ccb303 100644
--- a/ui/views/widget/root_view.cc
+++ b/ui/views/widget/root_view.cc
@@ -252,12 +252,8 @@
 ////////////////////////////////////////////////////////////////////////////////
 // RootView, ui::EventProcessor overrides:
 
-ui::EventTarget* RootView::GetRootForEvent(ui::Event* event) {
+ui::EventTarget* RootView::GetRootTarget() {
   return this;
-}
-
-ui::EventTargeter* RootView::GetDefaultEventTargeter() {
-  return this->GetEventTargeter();
 }
 
 void RootView::OnEventProcessingStarted(ui::Event* event) {