Do not attempt to parse NULL headers.
Do not attempt to parse NULL headers.

TBR=amit
TEST=fixes one of the top crashes in the lastest release.
BUG=36985

Review URL: http://codereview.chromium.org/661256

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@40234 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser