Pyauto-based memory test for ChromeOS in perf.py no longer freshly logs in.

When perf.MemoryTest used to log out/in (for a fresh ChromeOS login), this
caused a problem running the test via autotest because the log out cannot
be done as user chronos.  However, in discussions with nirnimesh@ and
sonnyrao@, the agreement is that there's no strong need for a fresh login
anyway in this test.  This has now been removed from the test.

BUG=chromium-os:29815
TEST=None

Review URL: https://chromiumcodereview.appspot.com/10273015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134598 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/functional/perf.py

@@ -1768,21 +1768,6 @@ class PageCyclerTest(BasePerfTest):
 class MemoryTest(BasePerfTest):
   """Tests to measure memory consumption under different usage scenarios."""
 
-  def setUp(self):
-    pyauto.PyUITest.setUp(self)
-
-    # Log in to get a fresh Chrome instance with a clean memory state (if
-    # already logged in, log out first).
-    if self.GetLoginInfo()['is_logged_in']:
-      self.Logout()
-      self.assertFalse(self.GetLoginInfo()['is_logged_in'],
-                      msg='Failed to log out.')
-
-    credentials = self.GetPrivateInfo()['test_google_account']
-    self.Login(credentials['username'], credentials['password'])
-    self.assertTrue(self.GetLoginInfo()['is_logged_in'],
-                    msg='Failed to log in.')
-
   def ExtraChromeFlags(self):
     """Launches Chrome with custom flags.