Fix several uncaught exceptions on Android.

Android developer site doesn't mention some functions in Camera class
could throw RuntimeException. Try to catch them and avoid crash.

BUG=348221, 348224, 348252
R=qinmin@chromium.org

Review URL: https://codereview.chromium.org/176713007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254879 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254879