Remove suppressions for crbug.com/104029.

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
diff --git a/tools/valgrind/memcheck/suppressions.txt b/tools/valgrind/memcheck/suppressions.txt
index 811e2b4c15eb885baa98fa7e9ce75c8210e198ae..68a7a6a3d7a96cd8110952330080506cfbdd6f60 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -5223,28 +5223,6 @@
    fun:_ZNK7WebCore16CSSStyleSelector24canShareStyleWithElementEPNS_4NodeE
    fun:_ZNK7WebCore16CSSStyleSelector26findSiblingForStyleSharingEPNS_4NodeERj
 }
-{
-   bug_104029a
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN11BalloonHost*
-   fun:_ZN15BalloonViewHost*
-}
-{
-   bug_104029b
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN8chromeos15BalloonView*
-   ...
-   fun:_ZN8chromeos21BalloonCollectionImpl*
-}
-{
-   bug_104029c
-   Memcheck:Addr4
-   fun:_ZN8chromeos26PowerManagerClientStubImpl6UpdateEv
-}
 
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