Remove ~1750 superfluous includes from core

Source/core/platform/chromium/PopupContainer.cpp

 /*
  * Copyright (c) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include <limits>
 #include "core/dom/Document.h"
 #include "core/dom/UserGestureIndicator.h"
 #include "core/page/Chrome.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Frame.h"
 #include "core/page/FrameView.h"
 #include "core/page/Page.h"
 #include "core/platform/PlatformGestureEvent.h"
-#include "core/platform/PlatformKeyboardEvent.h"
 #include "core/platform/PlatformMouseEvent.h"
 #include "core/platform/PlatformScreen.h"
-#include "core/platform/PlatformTouchEvent.h"
 #include "core/platform/PlatformWheelEvent.h"
 #include "core/platform/PopupMenuClient.h"
 #include "core/platform/chromium/FramelessScrollView.h"
-#include "core/platform/chromium/FramelessScrollViewClient.h"
 #include "core/platform/chromium/PopupListBox.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/IntRect.h"
 
 using namespace std;
 
 namespace WebCore {
 
 static const int kBorderSize = 1;
 
@@ skipping 396 matching lines @@
 }
 
 String PopupContainer::getSelectedItemToolTip()
 {
     // We cannot use m_popupClient->selectedIndex() to choose tooltip message,
     // because the selectedIndex() might return final selected index, not hovering selection.
     return listBox()->m_popupClient->itemToolTip(listBox()->m_selectedIndex);
 }
 
 } // namespace WebCore