Widen Valgrind suppressions for bugs 61753 (Leak) and 62461 (Use-after-free)...

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 # running overnight and removing outdated bugs/suppressions.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 3196 matching lines @@
 }
 {
    bug_61753/Addr4
    Memcheck:Addr4
    ...
    fun:pkix_*
    ...
    fun:CERT_PKIXVerifyCert
 }
 {
-   bug_61753/Leak
+   bug_61753/Leak (a)
    Memcheck:Leak
    ...
    fun:PR_*alloc
    ...
    fun:*nss*
    fun:*Singleton*
 }
 {
+   bug_61753/Leak (b)
+   Memcheck:Leak
+   ...
+   fun:pkix_*
+   ...
+   fun:CERT_PKIXVerifyCert
+}
+{
    bug_61753/Param
    Memcheck:Param
    ...
    fun:pkix_*
    ...
    fun:CERT_PKIXVerifyCert
 }
 {
    bug_62505
    Memcheck:Leak
    ...
    fun:_ZNK15DictionaryValue8DeepCopyEv
    fun:_ZN6policy27DeviceManagementPolicyCache9GetPolicyEv
    fun:_ZN6policy30DeviceManagementPolicyProvider7ProvideEPNS_33ConfigurationPolicyStoreInterfaceE
    fun:*policy*DeviceManagementPolicyProviderTest*
 }