Check ChromeToMobileService OriginalURLs before handling.

Check ChromeToMobileService OriginalURLs before handling.

Example one-day UMA shows "Send Success" > "Sending URL" + "Sending Snapshot":
https://gfsviewer.corp.google.com/cns/pa-d/home/uma-data/public/dashboards/histograms.html?dayCount=1&endDate=09-21-2012&version=24.0.1273.0-W&group=ChromeToMobile&histogram=Service&otherVersions=10

Perhaps these URLs may be redirected?
This CL checks the *original* URLs before handling.
This speculative fix should be safe even if it doesn't address the root issue.

BUG=102709, 120941
TEST=UMA data doesn't report (send success+failure) > (send URL+snapshot).
R=nyquist@chromium.org,sky@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=158352

[msw, 2012-09-22 00:52:16]

Hey Tommy and Scott, please take a look; thanks!

[sky, 2012-09-24 13:51:21]

LGTM

[commit-bot: I haz the power, 2012-09-24 16:58:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/10970054/2001

[commit-bot: I haz the power, 2012-09-24 19:34:55]

Change committed as 158352