Suppress Valgrind leak (heapcheck already suppressed)....

tools/valgrind/memcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 2651 matching lines @@
    fun:_ZN8chromeos19GoogleAuthenticator12AuthenticateEP7ProfileRKSsS4_
    fun:_Z16DispatchToMethodIN8chromeos19GoogleAuthenticatorEMNS0_13AuthenticatorEFbP7ProfileRKSsS6_EP14TestingProfileSsSsEvPT_T0_RK6Tuple3IT1_T2_T3_E
    fun:_ZN14RunnableMethodIN8chromeos19GoogleAuthenticatorEMNS0_13AuthenticatorEFbP7ProfileRKSsS6_E6Tuple3IP14TestingProfileSsSsEE3RunEv
    fun:_ZN11MessageLoop7RunTaskEP4Task
    fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
    fun:_ZN11MessageLoop6DoWorkEv
    fun:_ZN4base18MessagePumpDefault3RunEPNS_11MessagePump8DelegateE
    fun:_ZN11MessageLoop11RunInternalEv
    fun:_ZN11MessageLoop10RunHandlerEv
 }
-
+{
+   bug_40499
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN19UserScriptSlaveTest9SerializeERK10UserScript
+   ...
+   fun:_ZN7testing4Test3RunEv
+   fun:_ZN7testing8internal12TestInfoImpl3RunEv
+   fun:_ZN7testing8TestCase3RunEv
+   fun:_ZN7testing8internal12UnitTestImpl11RunAllTestsEv
+   fun:_ZN7testing8UnitTest3RunEv
+   fun:_ZN9TestSuite3RunEv
+   fun:main
+}