valgrind: Expand suppression from PK11_FindCertFromDERCertItem/SEC_DeletePermCertificate

tools/valgrind/memcheck/suppressions.txt

 # There are four 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 # running overnight and removing outdated bugs/suppressions.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 4720 matching lines @@
    fun:_ZN24mozilla_security_manager12_GLOBAL__N_125nsPKCS12Blob_ImportHelper*
 }
 {
    bug_176891b
    Memcheck:Leak
    ...
    fun:nssPKIObject_Create
    fun:nssTrustDomain_FindTrustForCertificate
    fun:STAN_DeleteCertTrustMatchingSlot
    fun:SEC_DeletePermCertificate
-   ...
-   fun:_ZN3net15NSSCertDatabase16DeleteCertAndKeyEPKNS_15X509CertificateE
 }
 {
    bug_177213
    Memcheck:Leak
    ...
    fun:_ZN10extensionsL9SerializeERKSt6vectorINS_10UserScriptESaIS1_EE
 }
 {
    bug_179758_a
    Memcheck:Leak
@@ skipping 1713 matching lines @@
    fun:_ZN7content24NavigationControllerImpl17LoadURLWithParamsERKNS_20NavigationController13LoadURLParamsE
    fun:_ZN7content5Shell15LoadURLForFrameERK4GURLRKSs
    fun:_ZN7content5Shell7LoadURLERK4GURL
 }
 {
    bug_372832
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7content27ServiceWorkerContextWrapper12InitInternalERKN4base8FilePathEPNS1_19SequencedTaskRunnerEPNS1_16MessageLoopProxyEPN5quota17QuotaManagerProxyE
 }