Update from https://crrev.com/304121

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 # running overnight and removing outdated bugs/suppressions.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 306 matching lines @@
    fun:_ZN7content5Shell15LoadURLForFrameERK4GURLRKSs
    fun:_ZN7content5Shell7LoadURLERK4GURL
 }
 {
    bug_372832
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN7content27ServiceWorkerContextWrapper12InitInternalERKN4base8FilePathEPNS1_19SequencedTaskRunnerEPNS1_16MessageLoopProxyEPN5quota17QuotaManagerProxyE
 }
 {
-   bug_379359
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN7content27ServiceWorkerContextWrapperC1EPNS_14BrowserContextE
-   fun:_ZN7content20StoragePartitionImpl6CreateEPNS_14BrowserContextEbRKN4base8FilePathE
-   fun:_ZN7content23StoragePartitionImplMap3GetERKSsS2_b
-   fun:_ZN7content12_GLOBAL__N_129GetStoragePartitionFromConfigEPNS_14BrowserContext*
-   fun:_ZN7content14BrowserContext19GetStoragePartitionEPS0_PNS_12SiteInstanceE
-   fun:_ZN7content14BrowserContext26GetDefaultStoragePartitionEPS0_
-   fun:_ZN7content21ShellBrowserMainParts21PreMainMessageLoopRunEv
-   fun:_ZN7content15BrowserMainLoop21PreMainMessageLoopRunEv
-}
-{
    bug_379943
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZN7content20StoragePartitionImpl6CreateEPNS_14BrowserContextEbRKN4base8FilePathE
    fun:_ZN7content23StoragePartitionImplMap3GetERKSsS2_b
    fun:_ZN7content12_GLOBAL__N_129GetStoragePartitionFromConfigEPNS_14BrowserContext*
    fun:_ZN7content14BrowserContext19GetStoragePartitionEPS0_PNS_12SiteInstanceE
    fun:_ZN7content14BrowserContext26GetDefaultStoragePartitionEPS0_
+   ...
    fun:_ZN7content21ShellBrowserMainParts21PreMainMessageLoopRunEv
    fun:_ZN7content15BrowserMainLoop21PreMainMessageLoopRunEv
 }
 {
    bug_380575
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN9__gnu_cxx13new_allocatorISt13_Rb_tree_nodeISt4pairIKSsPN3net20URLRequestJobFactory15ProtocolHandlerEEEE8allocateEmPKv
    ...
    fun:_ZNSt3mapISsPN3net20URLRequestJobFactory15ProtocolHandlerESt4lessISsESaISt4pairIKSsS3_EEEixERS7_
@@ skipping 548 matching lines @@
 {
    bug_424575
    Memcheck:Uninitialized
    fun:_ZN7content13NavigatorImpl23RecordNavigationMetricsERKNS_20LoadCommittedDetailsERK44FrameHostMsg_DidCommitProvisionalLoad_ParamsPNS_12SiteInstanceE
    fun:_ZN7content13NavigatorImpl11DidNavigateEPNS_19RenderFrameHostImplERK44FrameHostMsg_DidCommitProvisionalLoad_Params
    fun:_ZN7content19RenderFrameHostImpl26OnDidCommitProvisionalLoadERKN3IPC7MessageE
    fun:_ZN7content19TestRenderFrameHost26SendNavigateWithParametersEiRK4GURLN2ui14PageTransitionES3_iPKN4base8FilePathERKSt6vectorIS1_SaIS1_EE
    fun:_ZN7content19TestRenderFrameHost41SendNavigateWithTransitionAndResponseCodeEiRK4GURLN2ui14PageTransitionEi
    fun:_ZN7content19TestRenderFrameHost26SendNavigateWithTransitionEiRK4GURLN2ui14PageTransitionE
 }
+{
+   bug_431209a
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN8remoting13ClipboardAuraC1E13scoped_refptrIN4base22SingleThreadTaskRunnerEE
+   fun:_ZN8remoting17ClipboardAuraTest5SetUpEv
+}
+{
+   bug_431209b
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN2ui9Clipboard6CreateEv
+   fun:_ZN2ui9Clipboard19GetForCurrentThreadEv
+   fun:_ZN2ui21ScopedClipboardWriterD1Ev
+   fun:_ZN8remoting13ClipboardAura4Core20InjectClipboardEventERKNS_8protocol14ClipboardEventE
+}
+{
+   bug_431213
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN3gin22CreateFunctionTemplateIFSsPN4mojo2js13HandleWrapperEEEEN2v85LocalINS6_16FunctionTemplateEEEPNS6_7IsolateEN4base8CallbackIT_EEi
+   fun:_ZN3gin12_GLOBAL__N_114CallbackTraitsIMN4mojo2js13HandleWrapperEFSsvEvE14CreateTemplateEPN2v87IsolateES6_
+   fun:_ZN3gin21ObjectTemplateBuilder9SetMethodIMN4mojo2js13HandleWrapperEFSsvEEERS0_RKN4base16BasicStringPieceISsEERKT_
+   fun:_ZN4mojo2js13HandleWrapper24GetObjectTemplateBuilderEPN2v87IsolateE
+}