BalloonHost::Init suppression signature changes with content

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 # running overnight and removing outdated bugs/suppressions.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 5248 matching lines @@
    fun:*WebSocketServerSocketImpl6OnReadEi
 }
 {
    bug_108531
    Memcheck:Leak
    fun:_Znw*
    ...
    fun:_ZN21RenderProcessHostImpl4InitEb
    fun:_ZN14RenderViewHost16CreateRenderViewERKSbItN4base20string16_char_traitsESaItEEi
    fun:_ZN11TabContents32CreateRenderViewForRenderManagerEP14RenderViewHost
-   fun:_ZN21RenderViewHostManager14InitRenderViewEP14RenderViewHostRK15NavigationEntry
-   fun:_ZN21RenderViewHostManager8NavigateERK15NavigationEntry
-   fun:_ZN11TabContents15NavigateToEntryERK15NavigationEntryN20NavigationController10ReloadTypeE
-   fun:_ZN11TabContents22NavigateToPendingEntryEN20NavigationController10ReloadTypeE
-   fun:_ZN20NavigationController22NavigateToPendingEntryENS_10ReloadTypeE
-   fun:_ZN20NavigationController9LoadEntryEP15NavigationEntry
+   fun:_ZN21RenderViewHostManager14InitRenderViewEP14RenderViewHostRKN7content19NavigationEntryImplE
+   fun:_ZN21RenderViewHostManager8NavigateERKN7content19NavigationEntryImplE
+   fun:_ZN11TabContents15NavigateToEntryERKN7content19NavigationEntryImplENS0_20NavigationController10ReloadTypeE
+   fun:_ZN11TabContents22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN20NavigationController22NavigateToPendingEntryEN7content20NavigationController10ReloadTypeE
+   fun:_ZN20NavigationController9LoadEntryEPN7content19NavigationEntryImplE
    fun:_ZN20NavigationController7LoadURLERK4GURLRKN7content8ReferrerENS3_14PageTransitionERKSs
    fun:_ZN11BalloonHost4InitEv
    fun:_ZN15BalloonViewHost4InitEP10_GtkWidget
    fun:_ZN19BalloonViewHostView20ViewHierarchyChangedEbPN5views4ViewES2_
    fun:_ZN5views4View24ViewHierarchyChangedImplEbbPS0_S1_
    fun:_ZN5views4View25PropagateAddNotificationsEPS0_S1_
    fun:_ZN5views4View25PropagateAddNotificationsEPS0_S1_
    fun:_ZN5views4View25PropagateAddNotificationsEPS0_S1_
    fun:_ZN5views4View25PropagateAddNotificationsEPS0_S1_
    fun:_ZN5views4View14AddChildViewAtEPS0_i
@@ skipping 178 matching lines @@
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }
 {
    bug_todo_grep
    Memcheck:Leak
    fun:malloc
    obj:/bin/grep
    obj:/bin/grep
 }