Fix 20398: PageAction icon disappears on reader.google.com when url includes reference
Fix 20398: PageAction icon disappears on reader.google.com when url includes reference

We now strip away the reference when comparing the url's (for the purpose of clearing the page action icons).

BUG=20398
TEST=None

Review URL: http://codereview.chromium.org/174613

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@24654 0039d316-1c4b-4281-b951-d872f2087c98

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