Function names on Object.prototype should be common identifiers

Function names on Object.prototype should be common identifiers
https://bugs.webkit.org/show_bug.cgi?id=117614

Reviewed by Darin Adler.

Source/JavaScriptCore:

Patch written by Sam Weinig. Make Object's prototype function names common identififers since they're used frequently.

* runtime/CommonIdentifiers.h:
* runtime/FunctionConstructor.cpp:
(JSC::constructFunction):
* runtime/JSGlobalObject.cpp:
(JSC::JSGlobalObject::reset):
* runtime/JSObject.h:
* runtime/ObjectPrototype.cpp:
(JSC::ObjectPrototype::finishCreation):
* runtime/StringPrototype.cpp:
(JSC::StringPrototype::finishCreation):

Source/WebCore:

Use the added common identifiers.

* bindings/js/JSDOMWindowBase.cpp:
(WebCore::JSDOMWindowBase::finishCreation):
(WebCore::JSDOMWindowBase::updateDocument):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@151605 268f45cc-cd09-0410-ab3c-d52691b4dbfc