Deflake android_webview ShouldIgnoreNavigation test.
The testShouldIgnoreNavigationCanIgnoreLoading method was flaky because we call
onPageFinished for ignored navigations (bug 154292). The fix is to check that
the request for the navigation that is supposed to be ignored doesn't ever hit
the server.
BUG=
Java-only change, ran through trybot.
NOTRY=true
Review URL: https://chromiumcodereview.appspot.com/
11108016
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161600 0039d316-1c4b-4281-b951-d872f2087c98