https://bugs.webkit.org/show_bug.cgi?id=95281

Reviewed by Gavin Barraclough.

../JavaScriptCore: 

This is a step toward removing ScopeChainNode. We need a layer of
indirection so that 'with' scopes can proxy for an object.
JSScope::objectInScope() will be that layer.

* bytecode/EvalCodeCache.h:
(JSC::EvalCodeCache::tryGet):
(JSC::EvalCodeCache::getSlow):
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::resolve):
(JSC::BytecodeGenerator::resolveConstDecl): . vs ->

* interpreter/Interpreter.cpp:
(JSC::Interpreter::unwindCallFrame):
(JSC::Interpreter::execute):
* runtime/JSScope.cpp:
(JSC::JSScope::resolve):
(JSC::JSScope::resolveSkip):
(JSC::JSScope::resolveGlobalDynamic):
(JSC::JSScope::resolveBase):
(JSC::JSScope::resolveWithBase):
(JSC::JSScope::resolveWithThis): Added JSScope::objectAtScope() calls.

* runtime/JSScope.h:
(JSScope):
(JSC::JSScope::objectAtScope):
(JSC):
(ScopeChainIterator):
(JSC::ScopeChainIterator::ScopeChainIterator):
(JSC::ScopeChainIterator::get):
(JSC::ScopeChainIterator::operator->):
(JSC::ScopeChainIterator::operator++):
(JSC::ScopeChainIterator::operator==):
(JSC::ScopeChainIterator::operator!=):
(JSC::ScopeChainNode::begin):
(JSC::ScopeChainNode::end): I moved ScopeChainIterator to this file
to resolve a circular #include problem. Eventually, I'll probably rename
it to JSScope::iterator, so I think it belongs here.

* runtime/ScopeChain.cpp:
(JSC::ScopeChainNode::print):
(JSC::ScopeChainNode::localDepth): . vs ->

* runtime/ScopeChain.h:
(ScopeChainNode): I made the 'object' data member private because it's
no longer safe to access -- you need to call JSScope::objectAtScope()
instead.

The JITs need to be friends because of the private declaration.

Subtly, JIT/LLInt code is correct without any changes because JIT/LLInt
code never compiles direct access to a with scope.

../WebCore: 

* bindings/js/JSJavaScriptCallFrameCustom.cpp:
(WebCore::JSJavaScriptCallFrame::scopeChain):
(WebCore::JSJavaScriptCallFrame::scopeType):

../WebKit/mac: 

* WebView/WebScriptDebugDelegate.mm:
(-[WebScriptCallFrame scopeChain]):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126962 268f45cc-cd09-0410-ab3c-d52691b4dbfc