[MemSheriff] Suppress ProtocolHandler leak

BUG=394624
R=thestig@chromium.org
TBR=mmenke@chromium.org, thestig@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/399013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283621 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -6250,3 +6250,12 @@
    fun:_Znw*
    fun:_ZN32ProfileSyncComponentsFactoryMockC1Ev
 }
+{
+   bug_394624
+   Memcheck:Leak
+   ...
+   fun:_ZN3net24URLRequestJobFactoryImpl18SetProtocolHandlerERKSsPNS_20URLRequestJobFactory15ProtocolHandlerE
+   ...
+   fun:_ZN7content28ShellURLRequestContextGetter20GetURLRequestContextEv
+   fun:_ZN7content21ChromeAppCacheService20InitializeOnIOThreadERKN4base8FilePathEPNS_15ResourceContextEPN3net23URLRequestContextGetterE13scoped_refptrIN5quota20SpecialStoragePolicyEE
+}