Suppress a valgrind leak.

tools/valgrind/memcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or 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 (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 3363 matching lines @@
    fun:_ZNSt12_Vector_baseIN3net12SpdyIOBufferESaIS1_EE11_M_allocateEj
    fun:_ZNSt6vectorIN3net12SpdyIOBufferESaIS1_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS1_S3_EERKS1_
    fun:_ZNSt6vectorIN3net12SpdyIOBufferESaIS1_EE9push_backERKS1_
    fun:_ZNSt14priority_queueIN3net12SpdyIOBufferESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushERKS1_
    fun:_ZN3net11SpdySession10QueueFrameEPN4spdy9SpdyFrameEhPNS_10SpdyStreamE
    fun:_ZN3net11SpdySession14WriteSynStreamEjNS_15RequestPriorityEN4spdy16SpdyControlFlagsERK10linked_ptrISt3mapISsSsSt4lessISsESaISt4pairIKSsSsEEEE
    fun:_ZN3net10SpdyStream13DoSendRequestEb
    fun:_ZN3net14SpdyHttpStream11SendRequestEPNS_16HttpResponseInfoEP14CallbackRunnerI6Tuple1IiEE
 }
 {
+   bug_46886_c
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN3net15SpdySessionPool3GetERKNS_12HostPortPairEPNS_18HttpNetworkSessionERKNS_11BoundNetLogE
+   fun:_ZN3net12_GLOBAL__N_118SpdyHttpStreamTest17CreateSpdySessionEv
+   fun:_ZN3net12_GLOBAL__N_135SpdyHttpStreamTest_SendRequest_Test8TestBodyEv
+}
+{
    bug_19775_a
    Memcheck:Leak
    ...
    fun:malloc
    fun:sqlite3MemMalloc
    fun:mallocWithAlarm
    fun:sqlite3Malloc
    ...
    fun:sqlite3CreateIndex
    fun:yy_reduce
@@ skipping 325 matching lines @@
    Memcheck:Value4
    fun:modp_b64_encode
    fun:_ZN4base12Base64EncodeERKSsPSs
    fun:_ZN3net14HttpAuthGSSAPI17GenerateAuthTokenEPKSbIwSt11char_traitsIwESaIwEES6_RS5_PSs
    ...
    fun:_ZN3net24HttpAuthHandlerNegotiate6DoLoopEi
    fun:_ZN3net24HttpAuthHandlerNegotiate21GenerateAuthTokenImplEPKSbIwSt11char_traitsIwESaIwEES6_PKNS_15HttpRequestInfoEP14CallbackRunnerI6Tuple1IiEEPSs
    fun:_ZN3net15HttpAuthHandler17GenerateAuthTokenEPKSbIwSt11char_traitsIwESaIwEES6_PKNS_15HttpRequestInfoEP14CallbackRunnerI6Tuple1IiEEPSs
    fun:_ZN3net46HttpAuthHandlerNegotiateTest_DisableCname_Test8TestBodyEv
 }