PPAPI/NaCl: Fix leaky NaClIPCAdapter test.

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 # running overnight and removing outdated bugs/suppressions.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 1824 matching lines @@
    fun:SkBitmap::allocPixels
    fun:SkBitmap::allocPixels
 }
 {
    bug_127718
    Heapcheck:Leak
    fun:gfx::JPEGCodec::Decode
    fun:history::HistoryBackendTest_DeleteAll_Test::TestBody
 }
 {
-   bug_127954a
-   Heapcheck:Leak
-   fun:::NaClIPCAdapterTest::SetUp
-}
-{
-   bug_127954b
-   Heapcheck:Leak
-   fun:__gnu_cxx::new_allocator::allocate
-   fun:std::_Vector_base::_M_allocate
-   fun:std::vector::_M_insert_aux
-   fun:std::vector::push_back
-   fun:IPC::TestSink::OnMessageReceived
-   fun:IPC::TestSink::Send
-   fun:NaClIPCAdapter::SendMessageOnIOThread
-}
-{
-   bug_127954c
-   Heapcheck:Leak
-   fun:base::internal::WeakReferenceOwner::GetRef
-   fun:base::SupportsWeakPtr::AsWeakPtr
-   fun:*Iterator
-   fun:IPC::TestSink::OnMessageReceived
-   fun:IPC::TestSink::Send
-   fun:NaClIPCAdapter::SendMessageOnIOThread
-}
-{
-   bug_127954d
-   Heapcheck:Leak
-   fun:Pickle::Resize
-   fun:Pickle::Pickle
-   fun:*Message
-   fun:__gnu_cxx::new_allocator::construct
-   fun:std::vector::push_back
-   fun:IPC::TestSink::OnMessageReceived
-   fun:IPC::TestSink::Send
-   fun:NaClIPCAdapter::SendMessageOnIOThread
-}
-{
    bug_128145
    Heapcheck:Leak
    ...
    fun:BuildWebDataService
    fun:RefcountedProfileKeyedServiceFactory::GetServiceForProfile
    fun:RefcountedProfileKeyedServiceFactory::SetTestingFactoryAndUse
    fun:TestingProfile::CreateWebDataService
 }