Extend the chrome.tabs API to allow relative paths.
Extend the chrome.tabs API to allow relative paths.

BUG=None
TEST=In an extension, use chrome.tabs.create(...) to create a tab using a relative path ("foo/bar.html"). It should resolve that path by prepending the extension path ("chrome-extension://0000000000000000000000000000000000000042/foo/bar.html).
Review URL: http://codereview.chromium.org/113374

git-svn-id: http://src.chromium.org/svn/trunk/src@16098 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 648b1ecfe7da410fec089c6c5fca012301107edf
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser