Expand one of the suppressions for bug 46571.

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 # running overnight and removing outdated bugs/suppressions.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 519 matching lines @@
    fun:::BookmarkletTest_NonEmptyResult_Test::TestBody
    fun:testing::Test::Run
    fun:testing::internal::TestInfoImpl::Run
    fun:testing::TestCase::Run
    fun:testing::internal::UnitTestImpl::RunAllTests
    fun:testing::UnitTest::Run
    fun:main
    fun:__libc_start_main
 }
 
+# "*~TestShell" means "~TestShell" and "TestShell::~TestShell".
 {
    bug_46571_f
    Heapcheck:Leak
    fun:WebCore::makeExternalString
    fun:WebCore::v8ExternalString
    fun:WebCore::V8Proxy::evaluate
    fun:WebCore::ScriptController::collectGarbage
    fun:WebKit::WebFrameImpl::collectGarbage
    fun:TestShell::CallJSGC
-   fun:TestShell::~TestShell
+   fun:*~TestShell
    fun:::MainWindowDestroyed
    fun:g_closure_invoke
 }
 
 
 {
    bug_32366
    Heapcheck:Leak
    fun:CallbackRunner* NewCallback
    fun:media::PipelineImpl::FilterStateTransitionTask
@@ skipping 121 matching lines @@
    fun:WebCore::FrameLoader::addData
    fun:WebKit::WebFrameImpl::commitDocumentData
    fun:WebKit::FrameLoaderClientImpl::committedLoad
    fun:WebCore::FrameLoader::committedLoad
    fun:WebCore::DocumentLoader::commitLoad
    fun:WebCore::DocumentLoader::receivedData
    fun:WebCore::FrameLoader::receivedData
    fun:WebCore::MainResourceLoader::addData
    fun:WebCore::ResourceLoader::didReceiveData
 }