Add suppressions for Mac UI valgrind bots

tools/valgrind/memcheck/suppressions_mac.txt

 # There are three kinds of suppressions in this file:
 # 1. Third party stuff we have no control over.
 #
 # 2. Intentional unit test errors, 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.
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 331 matching lines @@
    fun:_ZNK10scoped_ptrI11ChildThreadE3getEv
    fun:_ZN12ChildProcess11main_threadEv
    fun:_ZN11ChildThread7currentEv
    fun:_ZN25WebMessagePortChannelImpl11postMessageERKN6WebKit9WebStringEPNS0_9WebVectorIPNS0_21WebMessagePortChannelEEE
    fun:_ZN7WebCore26PlatformMessagePortChannel19postMessageToRemoteEN3WTF10PassOwnPtrINS_18MessagePortChannel9EventDataEEE
    fun:_ZN7WebCore18MessagePortChannel19postMessageToRemoteEN3WTF10PassOwnPtrINS0_9EventDataEEE
    fun:_ZN7WebCore11MessagePort11postMessageEN3WTF10PassRefPtrINS_21SerializedScriptValueEEEPKNS1_6VectorINS1_6RefPtrIS0_EELm1EEERi
    fun:_ZN7WebCore8V8Custom32v8MessagePortPostMessageCallbackERKN2v89ArgumentsE
    fun:_ZN2v88internalL21Builtin_HandleApiCallENS0_9ArgumentsE
 }
+{
+   bug_26324a
+   Memcheck:Cond
+   ...
+   fun:_ZNKSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE13_M_insert_intIlEES3_S3_RSt8ios_basecT_
+   fun:_ZNKSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE6do_putES3_RSt8ios_basecl
+   fun:_ZNSolsEl
+   fun:_ZN26SocketStreamDispatcherHost10InitializeEPN3IPC7Message6SenderEi
+   fun:_ZN21ResourceMessageFilter18OnChannelConnectedEi
+}
+{
+   bug_26324b
+   Memcheck:Value4
+   ...
+   fun:_ZNKSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE13_M_insert_intIlEES3_S3_RSt8ios_basecT_
+   fun:_ZNKSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE6do_putES3_RSt8ios_basecl
+   fun:_ZNSolsEl
+   fun:_ZN26SocketStreamDispatcherHost10InitializeEPN3IPC7Message6SenderEi
+   fun:_ZN21ResourceMessageFilter18OnChannelConnectedEi
+}
+{
+   bug_26326
+   Memcheck:Addr4
+   fun:_ZN7WebCore14ChromiumBridge24suddenTerminationChangedEb
+   fun:_ZN7WebCore23enableSuddenTerminationEv
+   fun:_ZN7WebCore15StorageAreaSync11performSyncEv
+}