Valgrind: Remove suppressions for a fixed leak and add new suppressions for Mac memory errors.

tools/valgrind/memcheck/suppressions.txt

 # There are four 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 # running overnight and removing outdated bugs/suppressions.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 7098 matching lines @@
    fun:_ZN4base17MD5DigestToBase16ERKNS_9MD5DigestE
    fun:_ZN7content16WebKitTestRunner11CaptureDumpEv
    fun:_ZN7content16WebKitTestRunner12testFinishedEv
    fun:_ZN13WebTestRunner10TestRunner18completeNotifyDoneEv
    fun:_ZN13WebTestRunner10TestRunner10notifyDoneERKSt6vectorINS_10CppVariantESaIS2_EEPS2_
    fun:_ZN13WebTestRunner13CppBoundClass14MemberCallbackINS_10TestRunnerEE3runERKSt6vectorINS_10CppVariantESaIS5_EEPS5_
    fun:_ZN13WebTestRunner13CppBoundClass6invokeEPvPK10_NPVariantmPS2_
    fun:_ZN13WebTestRunner11CppNPObject6invokeEP8NPObjectPvPK10_NPVariantjPS4_
 }
 {
-   bug_290552a
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN18SkLumaMaskXfermode6CreateEN10SkXfermode4ModeE
-   fun:_ZN7WebCore15GraphicsContext16beginMaskedLayerERKNS_9FloatRectENS_8MaskTypeE
-   fun:_ZN7WebCore*RenderSVGResource*
-}
-{
-   bug_290552b
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN10SkXfermode6CreateENS_4ModeE
-   fun:_ZN7WebCore15GraphicsContext16beginMaskedLayerERKNS_9FloatRectENS_8MaskTypeE
-   fun:_ZN7WebCore*RenderSVGResource*
-}
-{
    bug_290559a
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResultsC1Ev
    fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResults11MaybeCreateEN6WebKit22WebFileSystemCallbacksE
    ...
    fun:_ZN2v88internal25FunctionCallbackArguments4Call*
 }
 {
    bug_290559b
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResultsC1Ev
    fun:_ZN7content12_GLOBAL__N_123WaitableCallbackResults11MaybeCreateEN6WebKit22WebFileSystemCallbacksE
    ...
    fun:_ZN7WebCore*SyncV8Internal*FunctionCallbackInfo*
 }
 {
    bug_291240
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11handleErrorENS1_6StatusEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer27writeTransferredArrayBufferEN2v86HandleINS2_5ValueEEEjPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11doSerializeEN2v86HandleINS2_5ValueEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer27writeAndGreyArrayBufferViewEN2v86HandleINS2_6ObjectEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer11doSerializeEN2v86HandleINS2_5ValueEEEPNS1_9StateBaseE
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer15DenseArrayState7advanceERS1_
    fun:_ZN7WebCore12_GLOBAL__N_110Serializer9serializeEN2v86HandleINS2_5ValueEEE
 }