Fix leak of a DownloadItem in SavePackage::Init.

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 2c4ec52a235e7b3371c3157004613b3c88a923c7..8dfc818258befa25d4a73e29823d9d76b8b8b2e7 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -2692,19 +2692,6 @@
    fun:_ZN11BrowserInit5StartERK11CommandLineRK8FilePathP7ProfilePi
 }
 {
-   bug_56495
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN11SavePackage4InitEv
-   fun:_ZN11TabContents8SavePageERK8FilePathS2_N11SavePackage15SavePackageTypeE
-   fun:_ZN25TestingAutomationProvider8SavePageEiRK8FilePathS2_iPb
-   fun:_Z16DispatchToMethodI25TestingAutomationProviderMS0_FviRK8FilePathS3_iPbEiS1_S1_ibEvPT_T0_RK6Tuple4IT1_T2_T3_T4_EP6Tuple1IT5_E
-   fun:_ZN3IPC16MessageWithReplyI6Tuple4Ii8FilePathS2_iE6Tuple1IRbEE8DispatchI25TestingAutomationProviderMS9_FviRKS2_SB_iPbEEEbPKNS_7MessageEPT_T0_
-   fun:_ZN25TestingAutomationProvider17OnMessageReceivedERKN3IPC7MessageE
-   fun:_ZN3IPC12ChannelProxy7Context17OnDispatchMessageERKNS_7MessageE
-   fun:_ZN3IPC11SyncChannel20ReceivedSyncMsgQueue16DispatchMessagesEv
-}
-{
    bug_56676
    Memcheck:Leak
    fun:_Znw*