suppress memory leak from NetworkingPrivateCrypto::VerifyCredentials

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 # running overnight and removing outdated bugs/suppressions.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 883 matching lines @@
    fun:content::CreateFileSystemContext
    fun:content::StoragePartitionImpl::Create
    fun:content::StoragePartitionImplMap::Get
    fun:GetStoragePartitionFromConfig
    fun:content::BrowserContext::GetStoragePartitionForSite
    fun:ExtensionService::NotifyExtensionUnloaded
    fun:ExtensionService::UnloadExtension
    fun:ExtensionService::AddExtension
    fun:extensions::TestExtensionEnvironment::MakeExtension
 }
+{
+   bug_286185
+   Heapcheck:Leak
+   fun:sqlite3MemMalloc
+   fun:NetworkingPrivateCrypto::VerifyCredentials
+   fun:NetworkingPrivateCryptoTest_VerifyCredentials_Test::TestBody
+}