Do not handle mouse wheel events when Ctrl is pressed

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 2171 matching lines @@
         if (isOverWidget && target && target->isWidget()) {
             Widget* widget = toRenderWidget(target)->widget();
             if (widget && passWheelEventToWidget(e, widget))
                 RETURN_WHEEL_EVENT_HANDLED();
         }
 
         if (node && !node->dispatchWheelEvent(event))
             RETURN_WHEEL_EVENT_HANDLED();
     }
 
+    // Ctrl + mousewheel should not be handled, because it is reserved for zoom

[eae, 2014/02/18 16:20:26]

This comment is misleading. Does it mean that this function doesn't handle
ctrl+mousewheel, that blink doesn't handle it or that it is not exposed to the
page?

+    if (e.ctrlKey())
+        return false;
+
 
     // We do another check on the frame view because the event handler can run JS which results in the frame getting destroyed.
     view = m_frame->view();
     if (!view || !view->wheelEvent(event))
         return false;
 
     RETURN_WHEEL_EVENT_HANDLED();
 
 #undef RETURN_WHEEL_EVENT_HANDLED
 }
@@ skipping 1814 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore