Valgrind: Disable a bunch of tests that are consistently timing out.

BUG=92630
TEST=none
TBR=jhawkins
Review URL: http://codereview.chromium.org/7634021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96532 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/gtest_exclude/ui_tests.gtest.txt

@@ -105,3 +105,12 @@ OutOfProcessPPAPITest.PostMessage
 
 # Flakily times out, http://crbug.com/92527
 NamedInterfaceTest.BasicNamedInterface
+
+# Consistently timing out. http://crbug.com/92630
+AutomationProxyTest.Cookies
+AutomationProxyTest.GetActiveTabIndex
+AutomationProxyTest.GetBrowserWindow
+AutomationProxyTest.GetBrowserWindowCount
+AutomationProxyTest.GetTab
+AutomationProxyTest.GetTabCount
+BookmarksUITest.TwoCommandsOneTab