Update AndroidManifest properties forBrowserPreferencesPage

The AndroidManifest was saying that the preferences activity was
handling orientation and keyboard visibility changes, which it does
not. This led to some strange layout issues, so remove the flags
from the manifest and let the system take care of these configuration
changes.

Change-Id: I0545b6d230363d6af3e4c6dedd4cd506c6f7ff21
1 file changed