Valgrind/Heapchecker: Suppress a leak in the download code.

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 # running overnight and removing outdated bugs/suppressions.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 1592 matching lines @@
    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
 }
+{
+   bug_83836
+   Heapcheck:Leak
+   fun:Callback2::Type* NewCallback
+   fun:DownloadManager::CheckDownloadUrlDone
+   fun:void DispatchToMethod
+   fun:CallbackImpl::RunWithParams
+   fun:CallbackRunner::Run
+   fun:DownloadSBClient::SafeBrowsingCheckUrlDone
+   fun:void DispatchToMethod
+   fun:RunnableMethod::Run
+   fun:::TaskClosureAdapter::Run
+}