Update DEPS, remove suppressions for bug 81753, fixed by CL 7891051

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 # running overnight and removing outdated bugs/suppressions.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 803 matching lines @@
    fun:sqlite3VdbeExec
    fun:sqlite3Step
    fun:sqlite3_step
    fun:sqlite3_exec
    fun:_ZN3sql10Connection7ExecuteEPKc
    fun:_ZN17TokenServiceTable4InitEv
    fun:_ZN11WebDatabase4InitERK8FilePath
    fun:_ZN14WebDataService29InitializeDatabaseIfNecessaryEv
 }
 {
-   bug_52364_a
-   Memcheck:Value4
-   fun:_ZNK10CMMConvLut7ConvertER10CMMMinBitsP14CMMRuntimeInfomm
-   fun:_Z16CMMProcessBitmapP15CMMBitmapParams
-   fun:DoMatchBitmap
-   fun:CWMatchBitmap
-   fun:ConvertImageGeneric
-   fun:CMSColorWorldConvertData
-   fun:CMSTransformConvertData
-   fun:CGCMSInterfaceTransformConvertData
-   fun:CGColorTransformConvertData
-}
-{
-   bug_52364_b
-   Memcheck:Cond
-   fun:_ZNK10CMMMtxOnly10ConvertMinE10CMM3x3Type10CMM3x1TypeR12CMMMinBuffermm
-   fun:_ZNK21CMMConvMatrixTemplateI10CMMMtxOnly22CMMConvGrayToRGBMatrixE7ConvertER10CMMMinBitsP14CMMRuntimeInfomm
-   fun:_Z16CMMProcessBitmapP15CMMBitmapParams
-   fun:DoMatchBitmap
-   fun:CWMatchBitmap
-   fun:ConvertImageGeneric
-   fun:CMSColorWorldConvertData
-   fun:CMSTransformConvertData
-   fun:CGCMSInterfaceTransformConvertData
-   fun:CGColorTransformConvertData
-}
-{
    bug_52681_a
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN16ChildProcessHost13CreateChannelEv
    fun:_ZN18UtilityProcessHost12StartProcessERK8FilePath
    fun:_ZN18UtilityProcessHost22StartExtensionUnpackerERK8FilePath
    fun:_ZN14RunnableMethodI26SandboxedExtensionUnpackerMS0_FvRK8FilePathE6Tuple1IS1_EE3RunEv
    fun:_ZN11MessageLoop7RunTaskERKNS_11PendingTaskE
 }
 {
@@ skipping 1035 matching lines @@
    fun:_ZN3net25DiskCacheBasedSSLHostInfo12CallbackImpl13RunWithParamsERK6Tuple1IiE
    fun:_ZN14CallbackRunnerI6Tuple1IiEE3RunIiEEvRKT_
    fun:_ZN3net9HttpCache8WorkItem10DoCallbackEiPN10disk_cache7BackendE
    fun:_ZN3net9HttpCache16OnBackendCreatedEiPNS0_9PendingOpE
    fun:_ZN3net9HttpCache12OnIOCompleteEiPNS0_9PendingOpE
    fun:_ZN3net9HttpCache15BackendCallback13RunWithParamsERK6Tuple1IiE
    fun:_ZN14CallbackRunnerI6Tuple1IiEE3RunIiEEvRKT_
    fun:_ZN12_GLOBAL__N_126MockBlockingBackendFactory14FinishCreationEv
    fun:_ZN47DiskCacheBasedSSLHostInfo_DeleteInCallback_Test8TestBodyEv
 }