Heapchecker: Suppress ClientSocketPoolHistograms leak inside UrlRequest....

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 # running overnight and removing outdated bugs/suppressions.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 913 matching lines @@
 }
 {
    bug_49310_b
    Heapcheck:Leak
    ...
    fun:TemplateURLRef::ParseHostAndSearchTermKey
    fun:TemplateURLRef::ParseIfNecessary
    fun:TemplateURLRef::GetHost
    fun:TemplateURLPrepopulateDataTest_ProvidersFromPrefs_Test::TestBody
 }
+{
+   bug_49412
+   Heapcheck:Leak
+   ...
+   fun:ClientSocketPoolHistograms
+   fun:HttpNetworkSession
+   fun:net::HttpNetworkLayer::GetSession
+   fun:net::HttpNetworkLayer::CreateTransaction
+   fun:net::HttpCache::Transaction::DoSendRequest
+   fun:net::HttpCache::Transaction::DoLoop
+   fun:net::HttpCache::Transaction::Start
+   fun:URLRequestHttpJob::StartTransaction
+   fun:URLRequestHttpJob::OnCanGetCookiesCompleted
+   fun:URLRequestHttpJob::AddCookieHeaderAndStart
+   fun:URLRequestHttpJob::Start
+   fun:URLRequest::StartJob
+   fun:URLRequest::Start
+   fun:HTTPTestServer::StartGETRequest
+}