Generify two Mac Valgrind suppressions and add one more from yesterday's gtest/gmock roll.

tools/valgrind/memcheck/suppressions_mac.txt

Index: tools/valgrind/memcheck/suppressions_mac.txt
diff --git a/tools/valgrind/memcheck/suppressions_mac.txt b/tools/valgrind/memcheck/suppressions_mac.txt
index cff48fa3e2a15de526268ccd1d216ba785c49a0d..8f361b24ce63ccdfa2a8ddb45029dabdf77944c7 100644
--- a/tools/valgrind/memcheck/suppressions_mac.txt
+++ b/tools/valgrind/memcheck/suppressions_mac.txt
@@ -831,27 +831,31 @@
    fun:_ZN40BookmarkFolderTargetTest_ReopenSame_Test8TestBodyEv
 }
 {
-   bug_39342
+   bug_39381
    Memcheck:Leak
    fun:_Znw*
    fun:_ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv
    fun:_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE7pointerEv
    fun:_ZN7testing8internal12UnitTestImpl17gtest_trace_stackEv
-   fun:_ZN7testing8UnitTest14PushGTestTraceERKNS_8internal9TraceInfoE
-   fun:_ZN7testing8internal11ScopedTraceC2EPKciRKNS_7MessageE
-   fun:_ZN7testing8internal11ScopedTraceC1EPKciRKNS_7MessageE
    ...
 }
 {
-   bug_39352
+   bug_39381
    Memcheck:Leak
    fun:_Znw*
    fun:_ZNK7testing8internal11ThreadLocalIPNS_8SequenceEE16GetOrCreateValueEv
    fun:_ZNK7testing8internal11ThreadLocalIPNS_8SequenceEE7pointerEv
    fun:_ZNK7testing8internal11ThreadLocalIPNS_8SequenceEE3getEv
-   fun:_ZN7testing10InSequenceC2Ev
-   fun:_ZN7testing10InSequenceC1Ev
-   fun:_ZN11webkit_glue26BufferedResourceLoaderTest5StartEv
+   ...
+}
+{
+   bug_39381
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv
+   fun:_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE7pointerEv
+   fun:_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE3getEv
+   fun:_ZN7testing8internal12UnitTestImpl41GetTestPartResultReporterForCurrentThreadEv
    ...
 }
 {