Disabled flaky depot_tools tests

R=akuegel@chromium.org,pgervais@chromium.org
BUG=477454

Review URL: https://codereview.chromium.org/1099143002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295007 0039d316-1c4b-4281-b951-d872f2087c98

tests/checkout_test.py

@@ -454,6 +454,7 @@ class GitCheckout(GitBaseTest):
     root = os.path.join(self.root_dir, self.name)
     self._check_base(self._get_co(None), root, None)
 
+  @unittest.skip('flaky')
   def testException(self):
     self._check_exception(
         self._get_co(None),

tests/gclient_smoketest.py

@@ -1582,6 +1582,7 @@ class BlinkDEPSTransitionSmokeTest(GClientSmokeBase):
     # But not the .git folder
     self.assertFalse(os.path.exists(join(self.blink, '.git')))
 
+  @unittest.skip('flaky')
   def testBlinkDEPSChangeUsingGclient(self):
     """Checks that {src,blink} repos are consistent when syncing going back and
     forth using gclient sync src@revision."""
@@ -1607,6 +1608,7 @@ class BlinkDEPSTransitionSmokeTest(GClientSmokeBase):
       self.CheckStatusPostMergePoint()
 
 
+  @unittest.skip('flaky')
   def testBlinkDEPSChangeUsingGit(self):
     """Like testBlinkDEPSChangeUsingGclient, but move the main project using
     directly git and not gclient sync."""
@@ -1639,6 +1641,7 @@ class BlinkDEPSTransitionSmokeTest(GClientSmokeBase):
       self.CheckStatusPostMergePoint()
 
 
+  @unittest.skip('flaky')
   def testBlinkLocalBranchesArePreserved(self):
     """Checks that the state of local git branches are effectively preserved
     when going back and forth."""