Remove suppression

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 # running overnight and removing outdated bugs/suppressions.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 1313 matching lines @@
 }
 {
    bug_49250
    Memcheck:Cond
    fun:gleUpdateFogData
    fun:gleUpdateState
    fun:_ZN8remoting11CapturerMac12CaptureRectsERKSt6vectorIN3gfx4RectESaIS3_EEP14CallbackRunnerI6Tuple1I13scoped_refptrINS_8Capturer11CaptureDataEEEE
    fun:_ZN8remoting8Capturer19CaptureInvalidRectsEP14CallbackRunnerI6Tuple1I13scoped_refptrINS0_11CaptureDataEEEE
    fun:_ZN8remoting28CapturerMacTest_Capture_Test8TestBodyEv
 }
-{
-   bug_49638
-   Memcheck:Addr4
-   fun:-[BookmarkButton isFolder]
-   fun:-[BookmarkBarFolderController openBookmarkFolderFromButtonAndCloseOldOne:]
-   fun:__NSFireDelayedPerform
-   fun:CFRunLoopRunSpecific
-   fun:CFRunLoopRunInMode
-   fun:RunCurrentEventLoopInMode
-   fun:ReceiveNextEventCommon
-   fun:BlockUntilNextEventMatchingListInMode
-   fun:_DPSNextEvent
-   fun:-[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
-   fun:_ZN9CocoaTest8TearDownEv
-   fun:_ZN7testing8internal12TestInfoImpl3RunEv
-   fun:_ZN7testing8TestCase3RunEv
-   fun:_ZN7testing8internal12UnitTestImpl11RunAllTestsEv
-   fun:_ZN9TestSuite3RunEv
-   fun:main
-}