Widen the suppression rule for Bug 47949.

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 # running overnight and removing outdated bugs/suppressions.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 716 matching lines @@
    Memcheck:Leak
    ...
    fun:_ZN12HALCADClient19AddPropertyListenerEmPK26AudioObjectPropertyAddressPFlmmS2_PvES3_
    ...
    fun:_ZN9HALSystem15InitializeShellEv
    fun:_ZN9HALSystem16CheckOutInstanceEv
    fun:AudioObjectGetPropertyData
    fun:*16HasAudioHardware*
 }
 {
-   bug_47949
+   bug_47949_a
    Memcheck:Cond
-   fun:rips_f_DrawRing
-   fun:rips_f_BltShape
-   fun:ripc_Render
+   ...
    fun:ripc_DrawRects
    fun:CGContextFillRects
    fun:CGContextFillRect
    fun:NSRectFill
    fun:_ZN18FocusIndicationFix40currentOSHasSetFocusRingStyleInBitmapBugEv
 }
 {
+   bug_47949_b
+   Memcheck:Value4
+   ...
+   fun:ripc_DrawRects
+   fun:CGContextFillRects
+   fun:CGContextFillRect
+   fun:NSRectFill
+   fun:_ZN18FocusIndicationFix40currentOSHasSetFocusRingStyleInBitmapBugEv
+}
+{
    bug_50286
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN11ProfileImpl14InitExtensionsEv
    fun:_ZN14ProfileManager10AddProfileEP7Profileb
    fun:_ZN14ProfileManager10GetProfileERK8FilePathb
    fun:_ZN14ProfileManager10GetProfileERK8FilePath
    fun:_ZN14ProfileManager17GetDefaultProfileERK8FilePath
    fun:_ZN12_GLOBAL__N_113CreateProfileERK18MainFunctionParamsRK8FilePath
    fun:_Z11BrowserMainRK18MainFunctionParams
@@ skipping 1184 matching lines @@
    fun:_ZN15tracked_objects10ThreadData23InitializeThreadContextERKSs
 }
 {
    bug_102621
    Memcheck:Cond
    fun:NSHFSTypeCodeFromFileType
    fun:-[NSPasteboard(ChimeraPasteboardURLUtils) getURLs:andTitles:convertingFilenames:]
    fun:_ZN2ui33PopulateURLAndTitleFromPasteboardEP4GURLPSbItN4base20string16_char_traitsESaItEEP12NSPasteboarda
    fun:_ZN24WebDragDestTest_URL_Test8TestBodyEv
 }