WKProcessGroup can't load injected bundle with file URL
<rdar://problem/12322774>
https://bugs.webkit.org/show_bug.cgi?id=97520

Reviewed by Anders Carlsson.

* UIProcess/API/mac/WKProcessGroup.mm:
(-[WKProcessGroup initWithInjectedBundleURL:]):
Fix typo. We need to pass the string as path, not as a URL.


git-svn-id: svn://svn.chromium.org/blink/trunk@129454 bbb929c8-8fbe-4397-9dbb-9b2b20218538