Widen a suppression for leaks in buzz::XmppClient.

tools/heapcheck/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 # running overnight and removing outdated bugs/suppressions.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 1006 matching lines @@
 }
 {
    bug_80550_b
    Heapcheck:Leak
    ...
    fun:RenderWidgetHost::WasHidden
 }
 {
    bug_80654
    Heapcheck:Leak
-   fun:__gnu_cxx::new_allocator::allocate
-   fun:std::_Vector_base::_M_allocate
-   fun:std::vector::_M_insert_aux
-   fun:std::vector::push_back
-   fun:ObserverListBase::AddObserver
-   fun:net::SSLConfigService::AddObserver
-   fun:*SSLClientSocketPool
-   ...
-   fun:*HttpNetworkSession
    ...
    fun:notifier::XmppClientSocketFactory::CreateTransportClientSocket
    fun:notifier::ChromeAsyncSocket::Connect
    fun:buzz::XmppClient::ProcessStartXmppLogin
    fun:buzz::XmppClient::Process
    fun:talk_base::Task::Step
    fun:talk_base::TaskRunner::InternalRunTasks
    fun:talk_base::TaskRunner::RunTasks
    fun:notifier::TaskPump::CheckAndRunTasks
 }
@@ skipping 866 matching lines @@
 }
 {
    bug_128145
    Heapcheck:Leak
    ...
    fun:BuildWebDataService
    fun:RefcountedProfileKeyedServiceFactory::GetServiceForProfile
    fun:RefcountedProfileKeyedServiceFactory::SetTestingFactoryAndUse
    fun:TestingProfile::CreateWebDataService
 }