Widen Valgrind suppressions

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 # running overnight and removing outdated bugs/suppressions.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 615 matching lines @@
    ...
    fun:_ZNSsC1EPKcRKSaIcE
 }
 {
    bug_76386b
    Memcheck:Leak
    fun:_Znw*
    fun:_ZNSs4_Rep9_S_createE*RKSaIcE
    fun:_ZNSs4_Rep8_M_cloneERKSaIcE*
 }
+{
+   bug_76386c
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZNSs4_Rep9_S_createE*RKSaIcE
+   fun:_ZNSs9_M_mutateEjjj
+}
 
 #-----------------------------------------------------------------------
 # 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
 
 # See tools/valgrind/memcheck_analyze.py before modifying sanity tests.
 {
    Memcheck sanity test 01 (memory leak).
    Memcheck:Leak
    fun:_Zna*
@@ skipping 224 matching lines @@
 {
    bug_83345
    Memcheck:Leak
    ...
    fun:_ZN4base23LeakyLazyInstanceTraits*NewEPv
    fun:_ZN4base12LazyInstance*LeakyLazyInstanceTraits*PointerEv
 }
 {
    bug_87500_a
    Memcheck:Leak
-   fun:_Znw*
+   fun:_Zn*
    ...
    fun:_ZN10disk_cache9BackendIO23ExecuteBackendOperationEv
    fun:_ZN10disk_cache9BackendIO16ExecuteOperationEv
 }
 {
    bug_87500_b
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN4base4Bind*TaskClosureAdapterEFvvEPS2_EENS_8internal20InvokerStorageHolderINS6_15InvokerStorage1IT_T0_EEEES9_RKSA_
    fun:_ZN11MessageLoop15PostDelayedTaskERKN15tracked_objects8LocationEP4Taskx
@@ skipping 4317 matching lines @@
    fun:_ZN3net22HttpNetworkTransaction6DoLoopEi
    fun:_ZN3net22HttpNetworkTransaction12OnIOCompleteEi
    fun:_ZN3net22HttpNetworkTransaction13OnStreamReadyERKNS_9SSLConfigERKNS_9ProxyInfoEPNS_10HttpStreamE
    fun:_ZN3net21HttpStreamFactoryImpl7Request13OnStreamReadyEPNS0_3JobERKNS_9SSLConfigERKNS_9ProxyInfoEPNS_10HttpStreamE
    fun:_ZN3net21HttpStreamFactoryImpl3Job21OnStreamReadyCallbackEv
    fun:_Z16DispatchToMethodIN3net21HttpStreamFactoryImpl3JobEMS2_FvvEEvPT_T0_RK6Tuple0
    fun:_ZN27ScopedRunnableMethodFactoryIN3net21HttpStreamFactoryImpl3JobEE14RunnableMethodIMS2_FvvE6Tuple0E3RunEv
    fun:_ZN4base6subtle18TaskClosureAdapter3RunEv
 }
 {
-   bug_92554
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZNSs4_Rep9_S_createEjjRKSaIcE
-   fun:_ZNSs9_M_mutateEjjj
-   fun:_ZNSs12_M_leak_hardEv
-   fun:_ZNSsixEj
-   fun:_ZN3net13TrimEndingDotERKSs
-   fun:_ZN3net20GetHostOrSpecFromURLERK4GURL
-   fun:_ZN20AsyncResourceHandler17OnResponseStartedEiP16ResourceResponse
-}
-{
    bug_92571
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7history16TopSitesDatabase8CreateDBERK8FilePath
    fun:_ZN7history16TopSitesDatabase4InitERK8FilePath
    fun:_ZN7history15TopSitesBackend16InitDBOnDBThreadERK8FilePath
    fun:_Z16DispatchToMethodIN7history15TopSitesBackendEMS1_FvRK8FilePathES2_EvPT_T0_RK6Tuple1IT1_E
    fun:_ZN14RunnableMethodIN7history15TopSitesBackendEMS1_FvRK8FilePathE6Tuple1IS2_EE3RunEv
    fun:_ZN4base6subtle18TaskClosureAdapter3RunEv
 }
@@ skipping 60 matching lines @@
 }
 {
    bug_todo_getdelim2
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }