Suppress memcheck leaks and update a TSAN rule.

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
===================================================================
--- tools/valgrind/memcheck/suppressions.txt	(revision 107705)
+++ tools/valgrind/memcheck/suppressions.txt	(working copy)
@@ -5129,6 +5129,30 @@
    fun:_ZN11webkit_glue25WebKitPlatformSupportImpl17loadAudioResourceEPN6WebKit11WebAudioBusEPKcjd
    fun:_ZN7WebCore15PlatformSupport19decodeAudioFileDataEPKcjd
 }
+{
+   bug_102049_a
+   Memcheck:Leak
+   fun:malloc
+   fun:_Z15sk_malloc_flagsjj
+   fun:_Z15sk_malloc_throwj
+   fun:_ZN8SkAAClip7RunHead5AllocEij
+   fun:_ZN8SkAAClip7Builder6finishEPS_
+   ...
+   fun:_ZN8SkCanvas8clip*ERK6Sk*N8SkRegion2OpEb
+}
+{
+   bug_102049_b
+   Memcheck:Leak
+   fun:malloc
+   fun:_Z15sk_malloc_flagsjj
+   fun:_Z15sk_malloc_throwj
+   fun:_ZN8SkAAClip7RunHead5AllocEij
+   fun:_ZN8SkAAClip7Builder6finishEPS_
+   ...
+   fun:_ZN8SkCanvas19updateDeviceCMCacheEv
+   fun:_ZN10SkDrawIterC1EP8SkCanvasb
+   fun:_ZN8SkCanvas8draw*ERK6Sk*RK7SkPaint
+}
 
 #-----------------------------------------------------------------------
 # 4. These only occur on our Google workstations