[Mac] Add additional debug code for crbug.com/94758 .
[Mac] Add additional debug code for crbug.com/94758 .

Make double sure that this bug isn't the result of an encoding issue.

BUG=94758
TEST=None


Review URL: http://codereview.chromium.org/7982001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@101991 0039d316-1c4b-4281-b951-d872f2087c98

yitian134/chromium,ropik/chromium,adobe/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,yitian134/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium