Leak in NSButtonCell decoder on Mac

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 # running overnight and removing outdated bugs/suppressions.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 1627 matching lines @@
 {
    bug_80036
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN2ui12_GLOBAL__N_120LoadResourcesDataPakE8FilePath
    fun:_ZN2ui14ResourceBundle19LoadCommonResourcesEv
    fun:_ZN2ui14ResourceBundle18InitSharedInstanceERKSs
    fun:_ZN15ChromeTestSuite10InitializeEv
    fun:_ZN12_GLOBAL__N_117UnitTestTestSuite10InitializeEv
 }
+{
+   bug_80050
+   Memcheck:Leak
+   fun:malloc_zone_calloc
+   fun:_internal_class_createInstanceFromZone
+   fun:NSAllocateObject
+   fun:+[NSHashTable alloc]
+   fun:+[NSTrackingArea initialize]
+   fun:_class_initialize
+   fun:_class_lookupMethodAndLoadCache
+   fun:objc_msgSend
+   fun:-[NSView addTrackingRect:owner:userData:assumeInside:]
+   fun:-[NSCell(NSPrivate_CellMouseTracking) _setMouseTrackingInRect:ofView:]
+   fun:-[NSButtonCell _setMouseTrackingInRect:ofView:]
+   fun:-[NSControl _setMouseTrackingForCell:]
+   fun:-[NSButton(NSButtonBorder) _setMouseTrackingForCell:]
+   fun:-[NSButtonCell setControlView:]
+   fun:-[NSControl initWithCoder:]
+   fun:-[NSButton initWithCoder:]
+   fun:-[NSClassSwapper initWithCoder:]
+   fun:_decodeObjectBinary
+   fun:-[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
+   fun:-[NSArray(NSArray) initWithCoder:]
+   fun:_decodeObjectBinary
+   fun:_decodeObject
+}