suppress memory leak from content::ServiceRegistryImpl::Bind

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 fea7c3b1e5c26c96ce2076d8a65504ee0ffd3f7e..10849ae044aa23539ded62770d9e7b9e4392fc71 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -3596,3 +3596,23 @@
    fun:_ZN4base12SimpleThread10ThreadMainEv
    fun:_ZN4base12_GLOBAL__N_110ThreadFuncEPv
 }
+{
+   bug_455732
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN4mojo7BindingINS_15ServiceProviderEE4BindENS_16ScopedHandleBaseINS_17MessagePipeHandleEEEPK15MojoAsyncWaiter
+   fun:_ZN4mojo7BindingINS_15ServiceProviderEE4BindENS_16InterfaceRequestIS1_EEPK15MojoAsyncWaiter
+   fun:_ZN7content19ServiceRegistryImpl4BindEN4mojo16InterfaceRequestINS1_15ServiceProviderEEE
+   fun:_ZN7content12_GLOBAL__N_120ApplicationSetupImpl24ExchangeServiceProvidersEN4mojo16InterfaceRequestINS2_15ServiceProviderEEENS2_12InterfacePtrIS4_EE
+   fun:_ZN7content20ApplicationSetupStub6AcceptEPN4mojo7MessageE
+   fun:_ZN4mojo8internal6Router21HandleIncomingMessageEPNS_7MessageE
+   fun:_ZN4mojo8internal6Router26HandleIncomingMessageThunk6AcceptEPNS_7MessageE
+   fun:_ZN7content32ApplicationSetupRequestValidator6AcceptEPN4mojo7MessageE
+   fun:_ZN4mojo8internal22MessageHeaderValidator6AcceptEPNS_7MessageE
+   fun:_ZN4mojo22ReadAndDispatchMessageENS_17MessagePipeHandleEPNS_15MessageReceiverEPb
+   fun:_ZN4mojo8internal9Connector17ReadSingleMessageEPi
+   fun:_ZN4mojo8internal9Connector24ReadAllAvailableMessagesEv
+   fun:_ZN4mojo8internal9Connector13OnHandleReadyEi
+   fun:_ZN4mojo8internal9Connector17CallOnHandleReadyEPvi
+   fun:_ZN4mojo8internal12_GLOBAL__N_113OnHandleReadyEPNS_6common13HandleWatcherEPFvPviES5_i
+}