Revert of Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp

Index: third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
diff --git a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
index f8cc545bd5c628645289a8bffa163fbba5cbbea7..ce6dc461e0efd79036f6d654cfe7c9635aa48c41 100644
--- a/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
+++ b/third_party/WebKit/Source/core/frame/EventHandlerRegistry.cpp
@@ -119,18 +119,8 @@
   bool targetSetChanged = updateEventHandlerTargets(op, handlerClass, target);
   bool hasHandlers = m_targets[handlerClass].size();
 
-  if (hadHandlers != hasHandlers) {
-    LocalFrame* frame = nullptr;
-    if (Node* node = target->toNode()) {
-      frame = node->document().frame();
-    } else if (LocalDOMWindow* domWindow = target->toLocalDOMWindow()) {
-      frame = domWindow->frame();
-    } else {
-      NOTREACHED() << "Unexpected target type for event handler.";
-    }
-
-    notifyHasHandlersChanged(frame, handlerClass, hasHandlers);
-  }
+  if (hadHandlers != hasHandlers)
+    notifyHasHandlersChanged(handlerClass, hasHandlers);
 
   if (targetSetChanged)
     notifyDidAddOrRemoveEventHandlerTarget(handlerClass);
@@ -205,25 +195,23 @@
 }
 
 void EventHandlerRegistry::notifyHasHandlersChanged(
-    LocalFrame* frame,
     EventHandlerClass handlerClass,
     bool hasActiveHandlers) {
   switch (handlerClass) {
     case ScrollEvent:
-      m_frameHost->chromeClient().setHasScrollEventHandlers(frame,
-                                                            hasActiveHandlers);
+      m_frameHost->chromeClient().setHasScrollEventHandlers(hasActiveHandlers);
       break;
     case WheelEventBlocking:
     case WheelEventPassive:
       m_frameHost->chromeClient().setEventListenerProperties(
-          frame, WebEventListenerClass::MouseWheel,
+          WebEventListenerClass::MouseWheel,
           webEventListenerProperties(hasEventHandlers(WheelEventBlocking),
                                      hasEventHandlers(WheelEventPassive)));
       break;
     case TouchStartOrMoveEventBlocking:
     case TouchStartOrMoveEventPassive:
       m_frameHost->chromeClient().setEventListenerProperties(
-          frame, WebEventListenerClass::TouchStartOrMove,
+          WebEventListenerClass::TouchStartOrMove,
           webEventListenerProperties(
               hasEventHandlers(TouchStartOrMoveEventBlocking),
               hasEventHandlers(TouchStartOrMoveEventPassive)));
@@ -231,7 +219,7 @@
     case TouchEndOrCancelEventBlocking:
     case TouchEndOrCancelEventPassive:
       m_frameHost->chromeClient().setEventListenerProperties(
-          frame, WebEventListenerClass::TouchEndOrCancel,
+          WebEventListenerClass::TouchEndOrCancel,
           webEventListenerProperties(
               hasEventHandlers(TouchEndOrCancelEventBlocking),
               hasEventHandlers(TouchEndOrCancelEventPassive)));