Widen one suppression to account for a recent rename of a class

BUG=96684
TBR=bruening@chromium.org
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/15975006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202550 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions_mac.txt

@@ -1643,8 +1643,8 @@
 {
    bug_96684a
    Memcheck:Uninitialized
-   fun:_ZN7content16P2PSocketHostTcp4SendERKN3net10IPEndPointERKSt6vectorIcSaIcEE
-   fun:*SocketHostTcpTest_*_Test8TestBodyEv
+   fun:_ZN7content20P2PSocketHostTcpBase4SendERKN3net10IPEndPointERKSt6vectorIcSaIcEE
+   fun:*SocketHost*TcpTest_*_Test8TestBodyEv
 }
 {
    bug_96684b