Heapcheck suppression for PluginService

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 # running overnight and removing outdated bugs/suppressions.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 1175 matching lines @@
    fun:ResourceDispatcherHostTest::MakeTestRequest
 }
 {
    Bug_70062
    Heapcheck:Leak
    fun:PR_NewLock
    fun:InitSessionCacheLocks
    fun:initSessionCacheLocksLazily
    fun:PR_CallOnce
 }
+{
+   bug_70115
+   Heapcheck:Leak
+   fun:FilePathWatcher
+   fun:PluginService
+   fun:DefaultSingletonTraits::New
+   fun:Singleton::get
+   fun:PluginService::GetInstance
+   fun:ResourceDispatcherHost::BeginRequest
+   fun:ResourceDispatcherHost::OnRequestResource
+   fun:IPC::MessageWithTuple::Dispatch
+   fun:ResourceDispatcherHost::OnMessageReceived
+   fun:ResourceDispatcherHostTest::MakeTestRequest
+   fun:ResourceDispatcherHostTest::MakeTestRequest
+   fun:ResourceDispatcherHostTest_TestMany_Test::TestBody
+}