Valgrind: Suppress a new Mac memory error....

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 # running overnight and removing outdated bugs/suppressions.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 1223 matching lines @@
    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_48269
+   Memcheck:Cond
+   ...
+   fun:-[BrowserWindowController initWithBrowser:takeOwnership:]
+   fun:-[BrowserWindowController initWithBrowser:]
+   fun:_ZN13BrowserWindow19CreateBrowserWindowEP7Browser
+   fun:_ZN7Browser19CreateBrowserWindowEv
+   fun:_ZN7Browser6CreateEP7Profile
+}