Android: Fix null ptr deref

BUG=341698
NOTRY=True

Review URL: https://codereview.chromium.org/133373008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249598 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249598