Add the suppressions for BalloonViewHost::Init::GtkWidget (issue 104998) back.

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 # running overnight and removing outdated bugs/suppressions.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 4424 matching lines @@
 {
    bug_104806_b
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZNSt3mapIPKN15tracked_objects6BirthsENS0_9DeathDataESt4lessIS3_ESaISt4pairIKS3_S4_EEEixERS8_
    fun:_ZN15tracked_objects10ThreadData11TallyADeathERKNS_6BirthsEii
    fun:_ZN15tracked_objects10ThreadData32TallyRunOnWorkerThreadIfTrackingEPKNS_6BirthsERKNS_11TrackedTimeES6_S6_
 }
 {
+   bug_104998a
+   Memcheck:Leak
+   fun:_Znw*
+   ...
+   fun:_ZN16SiteInstanceImpl10GetProcessEv
+   ...
+   fun:_ZN21RenderViewHostFactory6CreateEPN7content12SiteInstanceEPNS0_22RenderViewHostDelegate*SessionStorageNamespace*
+   fun:_ZN21RenderViewHostManager4InitEPN7content14BrowserContextEPNS0_12SiteInstanceEi
+   fun:_ZN15WebContentsImplC1EPN7content14BrowserContextEPNS0_12SiteInstance*SessionStorageNamespace*
+   fun:_ZN7content11WebContents6CreateEPNS_14BrowserContextEPNS_12SiteInstance*SessionStorageNamespace*
+   fun:_ZN11BalloonHost4InitEv
+}
+{
+   bug_104998c
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN20ChildProcessLauncherC1EbRKSt6vectorISt4pairISsSsESaIS2_EEiP11CommandLinePNS_6ClientE
+   fun:_ZN21RenderProcessHostImpl4InitE*
+   ...
+   fun:_ZN21RenderViewHostManager14InitRenderView*
+   fun:_ZN21RenderViewHostManager8NavigateERKN7content19NavigationEntryImplE
+   fun:_ZN15WebContentsImpl15NavigateToEntryERKN7content19NavigationEntryImplENS0_20NavigationController10ReloadTypeE
+   fun:_ZN15WebContentsImpl22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN24NavigationControllerImpl22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN24NavigationControllerImpl9LoadEntryEPN7content19NavigationEntryImplE
+   fun:_ZN24NavigationControllerImpl7LoadURLERK4GURLRKN7content8ReferrerENS3_14PageTransitionERKSs
+   fun:_ZN11BalloonHost4InitEv
+}
+{
+   bug_104998d
+   Memcheck:Leak
+   fun:_Znw*
+   ...
+   fun:_ZN21RenderProcessHostImpl4InitE*
+   ...
+   fun:_ZN21RenderViewHostManager8NavigateERKN7content19NavigationEntryImplE
+   fun:_ZN15WebContentsImpl15NavigateToEntryERKN7content19NavigationEntryImplENS0_20NavigationController10ReloadTypeE
+   fun:_ZN15WebContentsImpl22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN24NavigationControllerImpl22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN24NavigationControllerImpl9LoadEntryEPN7content19NavigationEntryImplE
+   fun:_ZN24NavigationControllerImpl7LoadURLERK4GURLRKN7content8ReferrerENS3_14PageTransitionERKSs
+   fun:_ZN11BalloonHost4InitEv
+}
+{
    bug_105715
    Memcheck:Uninitialized
    ...
    fun:vfprintf
    fun:__vsnprintf_chk
    fun:_ZN4base9vsnprintfEPcjPKcS0_
    fun:_ZN4base12_GLOBAL__N_110vsnprintfTEPcjPKcS1_
    fun:_ZN4base12_GLOBAL__N_1L14StringAppendVTISsEEvPT_PKNS2_10value_typeEPc
    fun:_ZN4base13StringAppendVEPSsPKcPc
    fun:_ZN4base13StringAppendFEPSsPKcz
@@ skipping 1305 matching lines @@
    obj:/lib/libselinux.so.1
 }
 {
    bug_todo_grep
    Memcheck:Leak
    fun:malloc
    obj:/bin/grep
    obj:/bin/grep
 }