Disable crashing extensions sync tests

A couple of extensions sync tests were crashing due to a DCHECK, and
were marked as FAILS.

Disabling them, since the crashes causes sync runs to go red.

TBR=akalin@chromium.org
BUG=70028
TEST=sync_integration_tests

Review URL: http://codereview.chromium.org/6265011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71750 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/live_sync/single_client_live_extensions_sync_test.cc

@@ -28,7 +28,7 @@ IN_PROC_BROWSER_TEST_F(SingleClientLiveExtensionsSyncTest,
 
 // TODO(rsimha): Enable after http://crbug.com/70028 is fixed.
 IN_PROC_BROWSER_TEST_F(SingleClientLiveExtensionsSyncTest,
-                       FAILS_StartWithSomeExtensions) {
+                       DISABLED_StartWithSomeExtensions) {
   ASSERT_TRUE(SetupClients());
 
   const int kNumExtensions = 5;

chrome/test/live_sync/two_client_live_extensions_sync_test.cc

@@ -28,7 +28,7 @@ IN_PROC_BROWSER_TEST_F(TwoClientLiveExtensionsSyncTest,
 
 // TODO(rsimha): Enable after http://crbug.com/70028 is fixed.
 IN_PROC_BROWSER_TEST_F(TwoClientLiveExtensionsSyncTest,
-                       FAILS_StartWithSameExtensions) {
+                       DISABLED_StartWithSameExtensions) {
   ASSERT_TRUE(SetupClients());
 
   const int kNumExtensions = 5;