can be used to add source of a passed in string and mime-type to
a frame. Added addResourceSourceToFrame for use by SourceView.

Also fixes an assertion because of an incorrect static_cast of identifiers
to unsigned long long, when they can be unsigned.

Reviewed by Geoff Garen.

* page/InspectorController.cpp:
(WebCore::addSourceToFrame): Helper function used by addSourceToFrame
and addResourceSourceToFrame.
(WebCore::addSourceToFrame): Generalized to take a source and mime-type string.
(WebCore::addResourceSourceToFrame): Renamed from addSourceToFrame.
(WebCore::getResourceDocumentNode): Fixes the static_cast to be long long.
(WebCore::InspectorController::windowScriptObjectAvailable): Adds
addResourceSourceToFrame to the JavaScript class.
* page/inspector/SourceView.js: Use the new addResourceSourceToFrame.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@33406 268f45cc-cd09-0410-ab3c-d52691b4dbfc