Allow running AppApiTest.AppProcessRedirectBack in aura.
Allow running AppApiTest.AppProcessRedirectBack in aura.

Cannot reproduce the bug crbug.com/105957.  I tried running the test
20 times but all succeeded.

The dump seems that the renderer process suddenly stopped during
NavigateToURLBlockUntilNavigationsComplete(), but that does not seem
aura-specific either.  Rather it seems some issue on the environment
of test running at that time.

BUG=105957
TEST=browser_tests passed locally & trybots succeeded


Review URL: http://codereview.chromium.org/9284014

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@119022 0039d316-1c4b-4281-b951-d872f2087c98

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