Suppress leak of CallbackData from PPAPI graphics code.

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
diff --git a/tools/valgrind/memcheck/suppressions.txt b/tools/valgrind/memcheck/suppressions.txt
index 63ec1c5dade630e9b27d115afb9a1f801c735e8d..a204c357a77ad0e0b7564f001da9e17962641d9d 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -5328,6 +5328,16 @@
    ...
    fun:_ZN9Extension6CreateERK8FilePathNS_8LocationERKN4base15DictionaryValueEiPSs
 }
+{
+   bug_106402
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN2pp25CompletionCallbackFactoryIN5ppapi5proxy20PPB_Graphics2D_ProxyENS2_26ProxyNonThreadSafeRefCountEE17NewCallbackHelperINS5_11Dispatcher1IMS3_FviRKNS1_12HostResourceEES8_EEEENS_18CompletionCallbackERKT_
+   fun:_ZN2pp25CompletionCallbackFactoryIN5ppapi5proxy20PPB_Graphics2D_ProxyENS2_26ProxyNonThreadSafeRefCountEE11NewCallbackIMS3_FviRKNS1_12HostResourceEES7_EENS_18CompletionCallbackET_RKT0_
+   fun:_ZN2pp25CompletionCallbackFactoryIN5ppapi5proxy20PPB_Graphics2D_ProxyENS2_26ProxyNonThreadSafeRefCountEE19NewOptionalCallbackIMS3_FviRKNS1_12HostResourceEES7_EENS_18CompletionCallbackET_RKT0_
+   fun:_ZN5ppapi5proxy38EnterHostFromHostResourceForceCallbackINS_5thunk18PPB_Graphics2D_APIEEC1IN2pp25CompletionCallbackFactoryINS0_20PPB_Graphics2D_ProxyENS0_26ProxyNonThreadSafeRefCountEEEMS8_FviRKNS_12HostResourceEESB_EESD_RT_T0_RKT1_
+   fun:_ZN5ppapi5proxy20PPB_Graphics2D_Proxy14OnHostMsgFlushERKNS_12HostResourceE
+}
 
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