Add EventHandlerRegistry

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 44 matching lines @@
 #include "core/dom/DOMStringList.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentMarker.h"
 #include "core/dom/DocumentMarkerController.h"
 #include "core/dom/Element.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/FullscreenElementStack.h"
 #include "core/dom/NodeRenderStyle.h"
 #include "core/dom/PseudoElement.h"
 #include "core/dom/Range.h"
+#include "core/dom/ScrollEventHandlerController.h"
 #include "core/dom/StaticNodeList.h"
 #include "core/dom/TreeScope.h"
 #include "core/dom/ViewportDescription.h"
 #include "core/dom/WheelController.h"
 #include "core/dom/shadow/ComposedTreeWalker.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/dom/shadow/SelectRuleFeatureSet.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/Editor.h"
 #include "core/editing/PlainTextRange.h"
@@ skipping 1205 matching lines @@
 unsigned Internals::wheelEventHandlerCount(Document* document, ExceptionState& exceptionState)
 {
     if (!document) {
         exceptionState.throwDOMException(InvalidAccessError, "No context document is available.");
         return 0;
     }
 
     return WheelController::from(*document)->wheelEventHandlerCount();
 }
 
+unsigned Internals::scrollEventHandlerCount(Document* document, ExceptionState& exceptionState)
+{
+    if (!document) {
+        exceptionState.throwDOMException(InvalidAccessError, "No context document is available.");
+        return 0;
+    }
+
+    return ScrollEventHandlerController::from(*document)->scrollEventHandlerCount();
+}
+
 unsigned Internals::touchEventHandlerCount(Document* document, ExceptionState& exceptionState)
 {
     if (!document) {
         exceptionState.throwDOMException(InvalidAccessError, "No context document is available.");
         return 0;
     }
 
     const TouchEventTargetSet* touchHandlers = document->touchEventTargets();
     if (!touchHandlers)
         return 0;
@@ skipping 1139 matching lines @@
 }
 
 String Internals::textSurroundingNode(Node* node, int x, int y, unsigned long maxLength)
 {
     blink::WebPoint point(x, y);
     SurroundingText surroundingText(VisiblePosition(node->renderer()->positionForPoint(static_cast<IntPoint>(point))), maxLength);
     return surroundingText.content();
 }
 
 }