First part of work to move V8 binding integrity off of vtables.

Source/WebCore/dom/KeyboardEvent.cpp

Index: Source/WebCore/dom/KeyboardEvent.cpp
diff --git a/Source/WebCore/dom/KeyboardEvent.cpp b/Source/WebCore/dom/KeyboardEvent.cpp
index 063807c3e3cc388421eb197d6d2c0031285f683e..a28c7190df6047edc8b632512f3a5fcac3900cb5 100644
--- a/Source/WebCore/dom/KeyboardEvent.cpp
+++ b/Source/WebCore/dom/KeyboardEvent.cpp
@@ -105,6 +105,7 @@ KeyboardEvent::KeyboardEvent()
     : m_keyLocation(DOMKeyLocationStandard)
     , m_altGraphKey(false)
 {
+    ScriptWrappable::init(this);
 }
 
 KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view)
@@ -115,6 +116,7 @@ KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* vie
     , m_keyLocation(keyLocationCode(key))
     , m_altGraphKey(false)
 {
+    ScriptWrappable::init(this);
 }
 
 KeyboardEvent::KeyboardEvent(const AtomicString& eventType, const KeyboardEventInit& initializer)
@@ -123,6 +125,7 @@ KeyboardEvent::KeyboardEvent(const AtomicString& eventType, const KeyboardEventI
     , m_keyLocation(initializer.keyLocation)
     , m_altGraphKey(false)
 {
+    ScriptWrappable::init(this);
 }
 
 KeyboardEvent::KeyboardEvent(const AtomicString& eventType, bool canBubble, bool cancelable, AbstractView *view,
@@ -133,6 +136,7 @@ KeyboardEvent::KeyboardEvent(const AtomicString& eventType, bool canBubble, bool
     , m_keyLocation(keyLocation)
     , m_altGraphKey(altGraphKey)
 {
+    ScriptWrappable::init(this);
 }
 
 KeyboardEvent::~KeyboardEvent()