Heapchecker: Widen a suppression.

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 # running overnight and removing outdated bugs/suppressions.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 1512 matching lines @@
    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
 }
 {
@@ skipping 169 matching lines @@
    fun:BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test::TestBody
 }
 {
    bug_91845_c
    Heapcheck:Leak
    ...
    fun:BrowserAccessibilityManager::Create
    fun:BrowserAccessibilityManager::CreateEmptyDocument
    fun:BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test::TestBody
 }