Fix leak in ComponentUpdaterTest.ProdVersionCheck.

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 # running overnight and removing outdated bugs/suppressions.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 1554 matching lines @@
    fun:__gnu_cxx::new_allocator::allocate
    ...
    fun:disk_cache::MemBackendImpl::CreateBackend
    ...
    fun:net::HttpCache::CreateBackend
    fun:net::HttpCache::CreateTransaction
    ...
    fun:net::CookieMonster::CookieMonsterTask::InvokeCallback
 }
 {
-   bug_96295
-   Heapcheck:Leak
-   fun:ComponentUpdaterTest::RegisterComponent
-   fun:ComponentUpdaterTest_ProdVersionCheck_Test::TestBody
-}
-{
    bug_96904
    Heapcheck:Leak
    ...
    fun:TestURLRequestContextGetter::GetURLRequestContext
    fun:*SingleLoginAttempt
    fun:notifier::Login::StartConnection
    fun:sync_notifier::InvalidationNotifier::UpdateCredentials
    fun:sync_notifier::NonBlockingInvalidationNotifier::Core::UpdateCredentials
    fun:void DispatchToMethod
 }
@@ skipping 234 matching lines @@
    fun:v8::internal::HeapSnapshotGenerator::CountEntriesAndReferences
    fun:v8::internal::HeapSnapshotGenerator::GenerateSnapshot
    fun:v8::internal::HeapProfiler::TakeSnapshotImpl
    fun:v8::internal::HeapProfiler::TakeSnapshotImpl
    fun:v8::internal::HeapProfiler::TakeSnapshot
    fun:v8::HeapProfiler::TakeSnapshot
    fun:GetNumObjects
    ...
 }