Remove a supression for crbug.com/331063

tools/valgrind/memcheck/suppressions.txt

 # There are four 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 # running overnight and removing outdated bugs/suppressions.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 2488 matching lines @@
    fun:_ZN4base23EnsureProcessTerminatedEi
 }
 {
    bug_321976
    Memcheck:Leak
    ...
    fun:nssList_Create
    fun:nssTrustDomain_UpdateCachedTokenCerts
 }
 {
-   bug_331063
-   Memcheck:Uninitialized
-   ...
-   fun:_ZN5blink11RenderImage12imageChangedEPvPKNS_7IntRectE
-   fun:_ZN5blink12RenderObject12imageChangedEPNS_13ImageResourceEPKNS_7IntRectE
-   fun:_ZN5blink13ImageResource12didAddClientEPNS_14ResourceClientE
-   fun:_ZN5blink8Resource9addClientEPNS_14ResourceClientE
-   fun:_ZN5blink19RenderImageResource16setImageResourceEPNS_13ImageResourceE
-   fun:_ZN5blink30PasswordGeneratorButtonElement11updateImageEv
-   fun:_ZN5blink30PasswordGeneratorButtonElement6attachERKNS_4Node13AttachContextE
-   fun:_ZN5blink13ContainerNode14attachChildrenERKNS_4Node13AttachContextE
-}
-{
    bug_331925
    Memcheck:Leak
    ...
    fun:_ZN3net27TestURLRequestContextGetter20GetURLRequestContextEv
    fun:_ZN3net14URLFetcherCore30StartURLRequestWhenAppropriateEv
    fun:_ZN3net14URLFetcherCore19DidInitializeWriterEi
    fun:_ZN3net14URLFetcherCore15StartOnIOThreadEv
 }
 {
    bug_332330
@@ skipping 921 matching lines @@
 }
 {
    bug_431213
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN3gin22CreateFunctionTemplateIFSsPN4mojo2js13HandleWrapperEEEEN2v85LocalINS6_16FunctionTemplateEEEPNS6_7IsolateEN4base8CallbackIT_EEi
    fun:_ZN3gin12_GLOBAL__N_114CallbackTraitsIMN4mojo2js13HandleWrapperEFSsvEvE14CreateTemplateEPN2v87IsolateES6_
    fun:_ZN3gin21ObjectTemplateBuilder9SetMethodIMN4mojo2js13HandleWrapperEFSsvEEERS0_RKN4base16BasicStringPieceISsEERKT_
    fun:_ZN4mojo2js13HandleWrapper24GetObjectTemplateBuilderEPN2v87IsolateE
 }