Shortening thank you message for a cleaner output.

Also, restoring ttest constants to original values in ttest_test.

BUG=404088

Review URL: https://codereview.chromium.org/616903003

Cr-Commit-Position: refs/heads/master@{#297457}

tools/auto_bisect/bisect_perf_regression.py

@@ -222,8 +222,7 @@ To run locally:
 REPRO_STEPS_TRYJOB = """
 To reproduce on a performance try bot:
  1. Edit run-perf-test.cfg
- 2. Upload your patch with: $ git cl upload --bypass-hooks
- 3. Send to the try server: $ git cl try -m tryserver.chromium.perf -b <bot>
+ 2. $ git try -b <bot> --svn_repo='svn://svn.chromium.org/chrome-try/try-perf'
 
 Notes:
  a) Follow the in-file instructions in run-perf-test.cfg.
@@ -247,21 +246,9 @@ https://sites.google.com/a/chromium.org/dev/developers/performance-try-bots
 """
 
 RESULTS_THANKYOU = """
-===== THANK YOU FOR CHOOSING BISECT AIRLINES =====
-Visit http://www.chromium.org/developers/core-principles for Chrome's policy
-on perf regressions.
-Contact chrome-perf-dashboard-team with any questions or suggestions about
-bisecting.
-.                   .-----.
-.     .---.         \      \==)
-.     |PERF\         \       \\
-.     |     ---------'-------'-----------.
-.     .     0 0 0 0 0 0 0 0 0 0 0 0 0 0 |_`-.
-.      \_____________.-------._______________)
-.                   /       /
-.                  /      /
-.                 /     /==)
-.                ._____."""
+O O | Visit http://www.chromium.org/developers/core-principles for Chrome's
+ X  | policy on perf regressions. Contact chrome-perf-dashboard-team with any
+/ \ | questions or suggestions about bisecting. THANK YOU."""
 
 
 def _AddAdditionalDepotInfo(depot_info):

tools/auto_bisect/ttest_test.py

@@ -62,7 +62,7 @@ class TTestTest(unittest.TestCase):
     t, _, p = ttest.WelchsTTest(
         [100, 101, 100, 101, 100], [1, 2, 1, 2, 1, 2, 1, 2])
     self.assertGreaterEqual(t, 250)
-    self.assertLessEqual(0.01, p)
+    self.assertLessEqual(p, 0.01)
 
   def testTTestVariance(self):
     """Verifies that higher variance -> higher p value."""
@@ -87,6 +87,8 @@ class LookupTableTest(unittest.TestCase):
   """Tests for functionality related to lookup of p-values in a table."""
 
   def setUp(self):
+    self.original_TWO_TAIL = ttest.TWO_TAIL
+    self.original_TABLE = ttest.TABLE
     ttest.TWO_TAIL = [1, 0.2, 0.1, 0.05, 0.02, 0.01]
     ttest.TABLE = {
         1: [0, 6.314, 12.71, 31.82, 63.66, 318.31],
@@ -95,6 +97,10 @@ class LookupTableTest(unittest.TestCase):
         4: [0, 2.132, 2.776, 3.747, 4.604, 7.173],
     }
 
+  def tearDown(self):
+    ttest.TWO_TAIL = self.original_TWO_TAIL
+    ttest.TABLE = self.original_TABLE
+
   def testLookupExactMatch(self):
     """Tests a lookup when there is an exact match."""
     self.assertEqual(0.1, ttest._LookupPValue(3.182, 3))