Allow chrome:// pages to load extension resources. Also, lock down access from chrome-extension:// pages to the origin of the resource being requested.

BUG=51702

Review URL: http://codereview.chromium.org/3121003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55656 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed