Create MouseEventManager and EventHandlingUtil

third_party/WebKit/Source/core/input/KeyboardEventManager.cpp

Index: third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
index e5b1abc0ea5fc708f0b649f2ad4964ecd31799f9..8321ba105c126c7fa20207142c7703f9584eb0e3 100644
--- a/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/KeyboardEventManager.cpp
@@ -8,7 +8,8 @@
 #include "core/editing/Editor.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/html/HTMLDialogElement.h"
-#include "core/input/EventHandler.h"
+#include "core/input/EventHandlingUtil.h"
+#include "core/input/ScrollManager.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutTextControlSingleLine.h"
 #include "core/loader/FrameLoaderClient.h"
@@ -120,7 +121,7 @@ WebInputEventResult KeyboardEventManager::keyEvent(
     if (initialKeyEvent.type == WebInputEvent::KeyUp || initialKeyEvent.type == WebInputEvent::Char) {
         KeyboardEvent* domEvent = KeyboardEvent::create(initialKeyEvent, m_frame->document()->domWindow());
 
-        return EventHandler::toWebInputEventResult(node->dispatchEvent(domEvent));
+        return EventHandlingUtil::toWebInputEventResult(node->dispatchEvent(domEvent));
     }
 
     WebKeyboardEvent keyDownEvent = initialKeyEvent;
@@ -133,7 +134,7 @@ WebInputEventResult KeyboardEventManager::keyEvent(
 
     DispatchEventResult dispatchResult = node->dispatchEvent(keydown);
     if (dispatchResult != DispatchEventResult::NotCanceled)
-        return EventHandler::toWebInputEventResult(dispatchResult);
+        return EventHandlingUtil::toWebInputEventResult(dispatchResult);
     // If frame changed as a result of keydown dispatch, then return early to avoid sending a subsequent keypress message to the new frame.
     bool changedFocusedFrame = m_frame->page() && m_frame != m_frame->page()->focusController().focusedOrMainFrame();
     if (changedFocusedFrame)
@@ -164,7 +165,7 @@ WebInputEventResult KeyboardEventManager::keyEvent(
         return WebInputEventResult::NotHandled;
     KeyboardEvent* keypress = KeyboardEvent::create(keyPressEvent, m_frame->document()->domWindow());
     keypress->setTarget(node);
-    return EventHandler::toWebInputEventResult(node->dispatchEvent(keypress));
+    return EventHandlingUtil::toWebInputEventResult(node->dispatchEvent(keypress));
 }
 
 void KeyboardEventManager::capsLockStateMayHaveChanged()