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

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 # running overnight and removing outdated bugs/suppressions.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 1625 matching lines @@
 {
    bug_96671
    Memcheck:Uninitialized
    ...
    fun:_ZNK12MockKeychain26SearchCreateFromAttributesEPKvmPK24SecKeychainAttributeListPP26OpaqueSecKeychainSearchRef
    fun:_ZN14KeychainSearch17FindMatchingItemsEPSt6vectorIP24OpaqueSecKeychainItemRefSaIS2_EE
 }
 {
    bug_96684a
    Memcheck:Uninitialized
-   fun:_ZN7content16P2PSocketHostTcp4SendERKN3net10IPEndPointERKSt6vectorIcSaIcEE
-   fun:*SocketHostTcpTest_*_Test8TestBodyEv
+   fun:_ZN7content20P2PSocketHostTcpBase4SendERKN3net10IPEndPointERKSt6vectorIcSaIcEE
+   fun:*SocketHost*TcpTest_*_Test8TestBodyEv
 }
 {
    bug_96684b
    Memcheck:Uninitialized
    fun:_ZN7content16P2PSocketHostUdp4SendERKN3net10IPEndPointERKSt6vectorIcSaIcEE
    fun:*SocketHostUdpTest_*_Test8TestBodyEv
 }
 {
    bug_96689
    Memcheck:Uninitialized
@@ skipping 697 matching lines @@
 }
 {
    bug_244102
    Memcheck:Unaddressable
    ...
    fun:_ZN5media12_GLOBAL__N_117ScreenCapturerMac10GlBlitFastERKN6webrtc12DesktopFrameERKNS2_13DesktopRegionE
    fun:_ZN5media12_GLOBAL__N_117ScreenCapturerMac7CaptureERKN6webrtc13DesktopRegionE
    fun:_ZN5media19ScreenCaptureDevice4Core9DoCaptureEv
    fun:_ZN5media19ScreenCaptureDevice4Core7DoStartEv
 }