Suppress Valgrind reports on gfx::JPEGCodec...

tools/valgrind/memcheck/suppressions.txt

 # There are three 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 # running overnight and removing outdated bugs/suppressions.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 3697 matching lines @@
    fun:_ZN8remoting14ScreenRecorder7DoStartEv
    fun:_Z16DispatchToMethodIN8remoting14ScreenRecorderEMS1_FvvEEvPT_T0_RK6Tuple0
    fun:_ZN14RunnableMethodIN8remoting14ScreenRecorderEMS1_FvvE6Tuple0E3RunEv
    fun:_ZN11MessageLoop7RunTaskEP4Task
    fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
    fun:_ZN11MessageLoop6DoWorkEv
    fun:_ZN4base18MessagePumpDefault3RunEPNS_11MessagePump8DelegateE
    fun:_ZN11MessageLoop11RunInternalEv
    fun:_ZN11MessageLoop10RunHandlerEv
 }
+{
+   bug_72399a
+   Memcheck:Addr8
+   ...
+   fun:jsimd_ycc_rgb_convert
+   fun:sep_upsample
+   fun:process_data_simple_main
+   fun:chromium_jpeg_read_scanlines
+   fun:_ZN3gfx9JPEGCodec6DecodeEPK*NS0_11ColorFormatEPSt6vectorIhSaIhEEPiS8_
+   fun:_ZN3gfx9JPEGCodec6DecodeEPK*
+   fun:*ExtractThumbnailERK15RefCountedBytes
+   fun:_ZN7history12TopSitesTest12GetThumbnailERK4GURL
+   fun:_ZN7history21TopSitesMigrationTest19MigrationAssertionsEv
+   fun:_ZN7history34TopSitesMigrationTest_Migrate_Test8TestBodyEv
+}
+{
+   bug_72399b
+   Memcheck:Addr8
+   fun:jsimd_ycc_rgb_convert_sse2
+}
+{
+   bug_72399c
+   Memcheck:Addr8
+   obj:*/unit_tests
+}