Fix issue with some locales simetimes getting the wrong page size.

Fix issue with some locales simetimes getting the wrong page size.
We use ulocdata_getPaperSize to get the preferred paper size for
a region.  The error handling for the call assumed that a value other
than U_ZERO_ERROR was an error.  This is incorrect.  The function sometimes
returns a warning (negative value).  When that happens, the error handling
code defaulted to 8.5x11 pages.

This CL changes the error handling to no longer treat a warning as an error.

BUG=140821
TEST=Set display language to English(UK).  Print a web page and choose to save as PDF.  Verify that the saved PDF is A4.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=150447

[Albert Bodenhamer, 2012-08-07 21:57:12]

Vitaly, can you take a look at this?

[Vitaly Buka (NO REVIEWS), 2012-08-07 21:59:40]

lgtm

[commit-bot: I haz the power, 2012-08-07 21:59:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/abodenha@chromium.org/10834217/1

[commit-bot: I haz the power, 2012-08-07 23:44:32]

Change committed as 150447