Web Inspector: [Canvas] capture a WebGL extension by it's name in lower case
https://bugs.webkit.org/show_bug.cgi?id=110745

Reviewed by Pavel Feldman.

WebGL's getExtension accepts a name that is tested against an ASCII case-insensitive match.
Just force lower case for extension names.

* inspector/InjectedScriptCanvasModuleSource.js:
(.):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144427 268f45cc-cd09-0410-ab3c-d52691b4dbfc