between DOMWrapperWorld and ScriptController/ScriptCachedFrameData, give the latter an
ref pointer to the former.  This reduces complexity & cost of the caching entries in the
back forward cache.

Patch by Gavin Barraclough <barraclough@apple.com> on 2009-11-10
Reviewed by Geoff Garen.

* WebCore.base.exp:
* bindings/js/JSDOMBinding.cpp:
(WebCore::DOMWrapperWorld::~DOMWrapperWorld):
* bindings/js/JSDOMBinding.h:
(WebCore::DOMWrapperWorld::forgetDocument):
* bindings/js/ScriptCachedFrameData.cpp:
(WebCore::ScriptCachedFrameData::ScriptCachedFrameData):
(WebCore::ScriptCachedFrameData::restore):
(WebCore::ScriptCachedFrameData::clear):
* bindings/js/ScriptCachedFrameData.h:
* bindings/js/ScriptController.cpp:
(WebCore::ScriptController::~ScriptController):
(WebCore::ScriptController::clearWindowShell):
(WebCore::ScriptController::initScript):
(WebCore::ScriptController::updateDocument):
* bindings/js/ScriptController.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@50792 268f45cc-cd09-0410-ab3c-d52691b4dbfc