Update suppression for issue 49404 and 50630.

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 98400f7d4d909d48f21eda6b6535f3e54698fa9e..c6670e7e96376482fc27e2931bf37e47695d7469 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -3507,36 +3507,11 @@
    fun:_ZN11ProfileImpl17GetRequestContextEv
 }
 {
-   bug_49404a
+   # Valgrind does not like using a std::string after resize() w/o initialiing.
+   bug_49404
    Memcheck:Value4
    fun:modp_b64_encode
    fun:_ZN4base12Base64EncodeERKSsPSs
-   fun:_ZN3net14HttpAuthGSSAPI17GenerateAuthToken*
-   fun:_ZN3net24HttpAuthHandlerNegotiate19DoGenerateAuthTokenEv
-   fun:_ZN3net24HttpAuthHandlerNegotiate6DoLoopEi
-   fun:_ZN3net24HttpAuthHandlerNegotiate12OnIOCompleteEi
-   fun:_Z16DispatchToMethodIN3net24HttpAuthHandlerNegotiateEMS1_FviEiEvPT_T0_RK6Tuple1IT1_E
-   fun:_ZN12CallbackImplIN3net24HttpAuthHandlerNegotiateEMS1_FviE6Tuple1IiEE13RunWithParamsERKS5_
-   fun:_ZN14CallbackRunnerI6Tuple1IiEE3RunIiEEvRKT_
-   fun:_ZN3net25SingleRequestHostResolver19OnResolveCompletionEi
-   fun:_Z16DispatchToMethodIN3net25SingleRequestHostResolverEMS1_FviEiEvPT_T0_RK6Tuple1IT1_E
-   fun:_ZN12CallbackImplIN3net25SingleRequestHostResolverEMS1_FviE6Tuple1IiEE13RunWithParamsERKS5_
-   fun:_ZN14CallbackRunnerI6Tuple1IiEE3RunIiEEvRKT_
-   fun:_ZN3net16HostResolverImpl7Request10OnCompleteEiRKNS_11AddressListE
-   fun:_ZN3net16HostResolverImpl13OnJobCompleteEPNS0_3JobEiiRKNS_11AddressListE
-   fun:_ZN3net16HostResolverImpl3Job16OnLookupCompleteEv
-}
-{
-   bug_49404b
-   Memcheck:Value4
-   fun:modp_b64_encode
-   fun:_ZN4base12Base64EncodeERKSsPSs
-   fun:_ZN3net14HttpAuthGSSAPI17GenerateAuthTokenEPKSbIwSt11char_traitsIwESaIwEES6_RS5_PSs
-   ...
-   fun:_ZN3net24HttpAuthHandlerNegotiate6DoLoopEi
-   fun:_ZN3net24HttpAuthHandlerNegotiate21GenerateAuthTokenImpl*
-   fun:_ZN3net15HttpAuthHandler17GenerateAuthToken*
-   fun:_ZN3net46HttpAuthHandlerNegotiateTest_DisableCname_Test8TestBodyEv
 }
 {
    bug_50056
@@ -3609,15 +3584,3 @@
    fun:_ZN64_GLOBAL__N_net_base_cookie_monster_unittest.cc_00000000_C9F6D94420AddKeyedCookieToListERKSsS1_RKN4base4TimeEPSt6vectorISt4pairISsPN3net13CookieMonster15CanonicalCookieEESaISC_EE
    fun:_ZN3net55CookieMonsterTest_DontImportDuplicateCreationTimes_Test8TestBodyEv
 }
-{
-   bug_50630
-   Memcheck:Value4
-   fun:modp_b64_encode
-   fun:_ZN4base12Base64EncodeERKSsPSs
-   fun:_Z24ConvertSkBitmapToDataURLRK8SkBitmap
-   fun:_ZN22InternetOptionsHandler10GetNetworkERKSsRK8SkBitmapS1_bbib
-   ...
-   fun:_ZN22InternetOptionsHandler18GetLocalizedValuesEP15DictionaryValue
-   fun:_ZN9OptionsUI23AddOptionsPageUIHandlerEP15DictionaryValueP20OptionsPageUIHandler
-   fun:_ZN9OptionsUIC1EP11TabContents
-}