Suppress multiple leaks and memory errors.

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 # running overnight and removing outdated bugs/suppressions.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 1721 matching lines @@
    bug_93932_a
    Memcheck:Overlap
    fun:memcpy
    fun:vp8_decode_update_thread_context
    fun:update_context_from_thread
    ...
    fun:ff_thread_decode_frame
    fun:avcodec_decode_video2
    fun:_ZN5media23FFmpegVideoDecodeEngine11DecodeFrameE13scoped_refptrINS_6BufferEE
    fun:_ZN5media23FFmpegVideoDecodeEngine18ConsumeVideoSampleE13scoped_refptrINS_6BufferEE
-   fun:_ZNK5media21DemuxCompleteActionP2IPNS_23FFmpegVideoDecodeEngineE13scoped_refptrINS_6BufferEEE10gmock_ImplIFvS5_EE17gmock_PerformImplIS5_N7testing8internal12ExcessiveArg*
-   ...
-   fun:_ZNK7testing6ActionIFv13scoped_refptrIN5media6BufferEEEE7PerformERKNSt3tr15tupleIS4_*
-   fun:_ZN7testing8internal18ActionResultHolderIvE13PerformActionIFv13scoped_refptrIN5media6BufferEEEEEPS2_RKNS_6ActionIT_EERKNS0_8FunctionISB_E13ArgumentTupleE
-   fun:_ZNK7testing8internal18FunctionMockerBaseIFv13scoped_refptrIN5media6BufferEEEE20UntypedPerformActionEPKvS9_
-   fun:_ZN7testing8internal25UntypedFunctionMockerBase17UntypedInvokeWithEPKv
-   ...
-   fun:_ZN7testing8internal14FunctionMockerIFv13scoped_refptrIN5media6BufferEEEE6InvokeES5_
-   fun:_ZN5media27FFmpegVideoDecodeEngineTest18ProduceVideoSampleE13scoped_refptrINS_6BufferEE
-   ...
-   fun:_ZN5media23FFmpegVideoDecodeEngine9ReadInputEv
-   fun:_ZN5media23FFmpegVideoDecodeEngine17ProduceVideoFrameE13scoped_refptrINS_10VideoFrameEE
-   fun:_ZN5media27FFmpegVideoDecodeEngineTest21CallProduceVideoFrameEv
-   fun:_ZN5media55FFmpegVideoDecodeEngineTest_DecodeFrame_0ByteFrame_Test8TestBodyEv
 }
 {
    bug_93932_b
    Memcheck:Overlap
    fun:memcpy
    fun:vp8_decode_update_thread_context
    fun:update_context_from_thread
    fun:frame_thread_free
    fun:avcodec_close
    ...
@@ skipping 185 matching lines @@
    fun:_pthread_exit
    fun:thread_start
 }
 {
    bug_102327_b
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN15tracked_objects10ThreadData10InitializeEv
    fun:_ZN15tracked_objects10ThreadData23InitializeThreadContextERKSs
 }
+{
+   bug_102621
+   Memcheck:Cond
+   fun:NSHFSTypeCodeFromFileType
+   fun:-[NSPasteboard(ChimeraPasteboardURLUtils) getURLs:andTitles:convertingFilenames:]
+   fun:_ZN2ui33PopulateURLAndTitleFromPasteboardEP4GURLPSbItN4base20string16_char_traitsESaItEEP12NSPasteboarda
+   fun:_ZN24WebDragDestTest_URL_Test8TestBodyEv
+}