Widen a valgrind suppression, it happens on the mac as well....

tools/valgrind/memcheck/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 # running overnight and removing outdated bugs/suppressions.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 1779 matching lines @@
    fun:_Z16DispatchToMethodIN8chromeos14NetworkLibraryEMS1_FvvEEvPT_T0_RK6Tuple0
    fun:_ZN4base9BaseTimerIN8chromeos14NetworkLibraryELb0EE9TimerTask3RunEv
    fun:_ZN11MessageLoop7RunTaskEP4Task
    fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
    fun:_ZN11MessageLoop13DoDelayedWorkEPN4base4TimeE
    fun:_ZN4base19MessagePumpLibevent3RunEPNS_11MessagePump8DelegateE
    fun:_ZN11MessageLoop11RunInternalEv
    fun:_ZN11MessageLoop10RunHandlerEv
 }
 {
-  bug_28633
-  Memcheck:Leak
-  fun:calloc
-  fun:__new_exitfn
-  fun:__cxa_atexit
+   bug_28633
+   Memcheck:Leak
+   fun:calloc
+   fun:__new_exitfn
+   fun:__cxa_atexit
 }
 {
-  bug_28824
-  Memcheck:Leak
-  fun:_Znw*
-  fun:_ZN11ProfileImplC1ERK8FilePath
-  fun:_ZN7Profile13CreateProfileERK8FilePath
-  fun:_ZN14ProfileManager13CreateProfileERK8FilePathRKSbIwSt11char_traitsIwESaIwEES8_S8_
-  fun:_ZN37ProfileManagerTest_CreateProfile_Test8TestBodyEv
-}
+   bug_28824
+   Memcheck:Leak
+   fun:_Znw*
+   ...
+   fun:_ZN7Profile13CreateProfileERK8FilePath
+   fun:_ZN14ProfileManager13CreateProfileERK8FilePathRKSbIwSt11char_traitsIwESaIwEES8_S8_
+   fun:_ZN37ProfileManagerTest_CreateProfile_Test8TestBodyEv
+}