Widen suppression for bug_49404 and bug_50630 for CrOS Valgrind bots

BUG=49404,50630
TBR=glider
Review URL: http://codereview.chromium.org/3037033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54135 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions.txt

@@ -3511,7 +3511,7 @@
    Memcheck:Value4
    fun:modp_b64_encode
    fun:_ZN4base12Base64EncodeERKSsPSs
-   fun:_ZN3net14HttpAuthGSSAPI17GenerateAuthTokenEPKSbIwSt11char_traitsIwESaIwEES6_RS5_PSs
+   fun:_ZN3net14HttpAuthGSSAPI17GenerateAuthToken*
    fun:_ZN3net24HttpAuthHandlerNegotiate19DoGenerateAuthTokenEv
    fun:_ZN3net24HttpAuthHandlerNegotiate6DoLoopEi
    fun:_ZN3net24HttpAuthHandlerNegotiate12OnIOCompleteEi
@@ -3616,7 +3616,7 @@
    fun:_ZN4base12Base64EncodeERKSsPSs
    fun:_Z24ConvertSkBitmapToDataURLRK8SkBitmap
    fun:_ZN22InternetOptionsHandler10GetNetworkERKSsRK8SkBitmapS1_bbib
-   fun:_ZN22InternetOptionsHandler15GetWirelessListEv
+   ...
    fun:_ZN22InternetOptionsHandler18GetLocalizedValuesEP15DictionaryValue
    fun:_ZN9OptionsUI23AddOptionsPageUIHandlerEP15DictionaryValueP20OptionsPageUIHandler
    fun:_ZN9OptionsUIC1EP11TabContents