Heapchecker: Suppress a set of leaks that randomly occurs.

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 # running overnight and removing outdated bugs/suppressions.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 1557 matching lines @@
    fun:::WebWidgetHostGtkWidget::HandleExpose
    fun:_gtk_marshal_BOOLEAN__BOXED
    fun:base::MessagePumpForUI::DispatchEvents
    fun:base::MessagePumpForUI::EventDispatcher
    fun:base::MessagePumpForUI::RunOnce
    fun:base::MessagePumpForUI::RunWithDispatcher
    fun:base::MessagePumpForUI::Run
    fun:MessageLoop::RunInternal
    fun:MessageLoop::RunHandler
 }
-
+{
+   bug_83561a
+   Heapcheck:Leak
+   fun:CancelableTask* NewRunnableMethod
+   fun:net::HostResolverImpl::Job::DoLookup
+   fun:void DispatchToMethod
+   fun:RunnableMethod::Run
+   fun:base::::WorkerThread::ThreadMain
+}
+{
+   bug_83561b
+   Heapcheck:Leak
+   fun:ChromeTestSuite::Initialize
+   fun:::UnitTestTestSuite::Initialize
+   fun:base::TestSuite::Run
+}
+{
+   bug_83561c
+   Heapcheck:Leak
+   ...
+   fun:net::HostResolverImpl::Resolve
+   fun:net::SingleRequestHostResolver::Resolve
+   fun:net::TransportConnectJob::DoResolveHost
+   fun:net::TransportConnectJob::DoLoop
+   fun:net::TransportConnectJob::ConnectInternal
+   fun:net::ConnectJob::Connect
+   fun:net::internal::ClientSocketPoolBaseHelper::RequestSocketInternal
+   fun:net::internal::ClientSocketPoolBaseHelper::RequestSocket
+   fun:net::ClientSocketPoolBase::RequestSocket
+   fun:net::TransportClientSocketPool::RequestSocket
+   fun:net::ClientSocketHandle::Init
+   fun:net::::InitSocketPoolHelper
+   fun:net::ClientSocketPoolManager::InitSocketHandleForRawConnect
+   fun:notifier::ProxyResolvingClientSocket::ProcessProxyResolveDone
+}