Fix couple of issues in ExtensionCrashRecoveryTest. In particular the
code assumes the there are a certain number of notifications, which
means if there aren't the test crashes. The ASSERTS I'm adding should
give better error reporting.

BUG=163196
TEST=none
R=mpcomplete@chromium.org


Review URL: https://chromiumcodereview.appspot.com/11428085

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170263 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed