Clean up the TestRunner methods exposed for Web Notifications.

Rename simulateLegacyWebNotificationClick to simulateWebNotificationClick
since it is not specific to legacy notifications. Also remove the
cancelAllActiveNotifications method, since it's not currently used
and resetting notifications will be done automatically between tests.

BUG=349015

Review URL: https://codereview.chromium.org/184313005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256638 0039d316-1c4b-4281-b951-d872f2087c98
[MIPS] Define liblouis_nacl nexe for MIPS

Add missing case for MIPS in liblouis_nacl_wrapper_nacl.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=2275
TEST= Chromium buildbots

Review URL: https://codereview.chromium.org/197613002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256639 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256639