Suppress a new Mac valgrind leak

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 # running overnight and removing outdated bugs/suppressions.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 1100 matching lines @@
    fun:CFRunLoopRunSpecific
    fun:CFRunLoopRunInMode
    fun:RunCurrentEventLoopInMode
    fun:ReceiveNextEventCommon
    fun:BlockUntilNextEventMatchingListInMode
    fun:_DPSNextEvent
    fun:-[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
    fun:_ZN9CocoaTest8TearDownEv
    fun:_ZN7testingL35HandleExceptionsInMethodIfSupportedINS_4TestEvEET0_PT_MS3_FS2_vEPKc
 }
+{
+   bug_61929
+   Memcheck:Leak
+   fun:calloc
+   fun:IOAlloc
+   fun:CMOpenOrNewAccess
+   fun:CMOpenProfile
+   fun:_CMGetProfileOfSuite
+   fun:CMGetProfileByAVID
+   fun:CMSCreateDisplayProfile
+   fun:create
+   fun:CMSTransformCreate
+   fun:createBase
+   fun:initialize
+   fun:createColorTransform
+   fun:CGColorTransformCreateMutable
+   fun:CGBitmapColorTransformCreate
+   fun:__CGBitmapContextDelegateCreate
+   fun:__CGBitmapContextDelegateCreate
+   fun:createBitmapContext
+   fun:CGBitmapContextCreate
+}