Widen bug_49404b suppression as well

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 # running overnight and removing outdated bugs/suppressions.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 3516 matching lines @@
    fun:_ZN3net16HostResolverImpl3Job16OnLookupCompleteEv
 }
 {
    bug_49404b
    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:_ZN3net24HttpAuthHandlerNegotiate21GenerateAuthTokenImpl*
+   fun:_ZN3net15HttpAuthHandler17GenerateAuthToken*
    fun:_ZN3net46HttpAuthHandlerNegotiateTest_DisableCname_Test8TestBodyEv
 }
 {
    bug_50056
    Memcheck:Leak
    fun:_Znw*
    fun:_Z11NewCallbackI22ContentSettingsHandlerPK5ValueEPN9Callback1IT0_E4TypeEPT_MS9_FvS5_E
    fun:_ZN22ContentSettingsHandler16RegisterMessagesEv
    fun:_ZN17DOMMessageHandler6AttachEP5DOMUI
    fun:_ZN9OptionsUI23AddOptionsPageUIHandlerEP15DictionaryValueP20OptionsPageUIHandler
@@ skipping 65 matching lines @@
    Memcheck:Value4
    fun:modp_b64_encode
    fun:_ZN4base12Base64EncodeERKSsPSs
    fun:_Z24ConvertSkBitmapToDataURLRK8SkBitmap
    fun:_ZN22InternetOptionsHandler10GetNetworkERKSsRK8SkBitmapS1_bbib
    ...
    fun:_ZN22InternetOptionsHandler18GetLocalizedValuesEP15DictionaryValue
    fun:_ZN9OptionsUI23AddOptionsPageUIHandlerEP15DictionaryValueP20OptionsPageUIHandler
    fun:_ZN9OptionsUIC1EP11TabContents
 }