Index: tools/valgrind/suppressions.txt
===================================================================
--- tools/valgrind/suppressions.txt	(revision 20262)
+++ tools/valgrind/suppressions.txt	(working copy)
@@ -188,6 +188,14 @@
    fun:event_base_loopexit
    fun:_ZN4base19MessagePumpLibevent3RunEPNS_11MessagePump8DelegateE
 }
+{
+   # array of weak references freed but not processed?
+   bug_16576
+   Memcheck:Leak
+   ...
+   fun:g_object_weak_ref
+   fun:g_object_add_weak_pointer
+}
 
 #-----------------------------------------------------------------------
 # 2. intentional unit test errors, or stuff that is somehow a false positive
@@ -627,6 +635,15 @@
    fun:_ZN3net12HostResolver3Job5StartEv
 }
 {
+   # ditto, but tweaked to fire on bots, more robust against optimizer changes?
+   bug_16089b
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZN4base22LinuxDynamicThreadPool8PostTaskEP4Task
+   ...
+   fun:_ZN18chrome_browser_net9DnsMaster24PreLockedScheduleLookupsEv
+}
+{
    # very common in ui tests
    bug_16091
    Memcheck:Leak
@@ -795,3 +812,79 @@
    ...
    fun:_ZN7WebCore11FrameLoader4loadEPNS_14DocumentLoaderE
 }
+{
+   bug_16577
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZN12RenderThread22InformHostOfCacheStatsEv
+}
+{
+   # happened 1 in 16 runs
+   bug_16578
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZNSs4_Rep9_S_createEjjRKSaIcE
+   fun:_ZNSs12_S_constructIPKcEEPcT_S3_RKSaIcESt20forward_iterator_tag
+   fun:_ZNSsC1EPKcRKSaIcE
+   fun:_ZN12WebFrameImplD0Ev
+}
+{
+   # webkit bug?
+   bug_16579
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZN3WTF9HashTableIPN7WebCore13QualifiedName17QualifiedNameImplES4_NS_17IdentityExtractorIS4_EENS1_17QualifiedNameHashENS_10HashTraitsIS4_EES9_E18addPassingHashCodeINS1_23QualifiedNameComponentsESC_NS_24HashSetTranslatorAdapterIS4_S9_SC_NS1_25QNameComponentsTranslatorEEEEESt4pairINS_17HashTableIteratorIS4_S4_S6_S7_S9_S9_EEbERKT_RKT0_
+   fun:_ZN3WTF7HashSetIPN7WebCore13QualifiedName17QualifiedNameImplENS1_17QualifiedNameHashENS_10HashTraitsIS4_EEE3addINS1_23QualifiedNameComponentsENS1_25QNameComponentsTranslatorEEESt4pairINS_24HashTableIteratorAdapterINS_9HashTableIS4_S4_NS_17IdentityExtractorIS4_EES5_S7_S7_EES4_EEbERKT_
+   fun:_ZN7WebCore13QualifiedNameC1ERKNS_12AtomicStringES3_S3_
+   fun:_ZN7WebCore9HTMLNames4initEv
+}
+{
+   bug_16583
+   Memcheck:Leak
+   fun:malloc
+   fun:g_malloc
+   fun:g_slice_alloc
+   fun:g_slice_alloc0
+   fun:g_type_create_instance
+   fun:g_object_constructor
+   fun:g_object_newv
+   fun:g_object_new_valist
+   ...
+   fun:gdk_window_new
+   fun:gtk_window_realize
+   fun:g_cclosure_marshal_VOID__VOID
+   fun:g_type_class_meta_marshal
+   fun:g_closure_invoke
+   fun:signal_emit_unlocked_R
+   fun:g_signal_emit_valist
+   fun:g_signal_emit
+   fun:gtk_widget_realize
+}
+{
+   bug_16584
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZN7WebCore10CSSRuleSet12addToRuleSetEPNS_16AtomicStringImplERN3WTF7HashMapIS2_PNS_15CSSRuleDataListENS3_7PtrHashIS2_EENS3_10HashTraitsIS2_EENS9_IS6_EEEEPNS_12CSSStyleRuleEPNS_11CSSSelectorE
+   fun:_ZN7WebCore10CSSRuleSet7addRuleEPNS_12CSSStyleRuleEPNS_11CSSSelectorE
+   fun:_ZN7WebCore10CSSRuleSet17addRulesFromSheetEPNS_13CSSStyleSheetERKNS_19MediaQueryEvaluatorEPNS_16CSSStyleSelectorE
+   fun:_ZN7WebCoreL22loadSimpleDefaultStyleEv
+   fun:_ZN7WebCore16CSSStyleSelectorC1EPNS_8DocumentERKNS_6StringEPNS_14StyleSheetListEPNS_13CSSStyleSheetEbb
+   fun:_ZN7WebCore8Document6attachEv
+   fun:_ZN7WebCore5Frame11setDocumentEN3WTF10PassRefPtrINS_8DocumentEEE
+   fun:_ZN7WebCore11FrameLoader5beginERKNS_4KURLEbPNS_14SecurityOriginE
+   fun:_ZN7WebCore11FrameLoader4initEv
+   fun:_ZN7WebCore5Frame4initEv
+}
+{
+   # 1 in 20 runs?
+   bug_16586
+   Memcheck:Leak
+   fun:_Znwj
+   fun:_ZN10URLFetcherC1ERK4GURLNS_11RequestTypeEPNS_8DelegateE
+   fun:_ZN22AlternateNavURLFetcher7ObserveE16NotificationTypeRK18NotificationSourceRK19NotificationDetails
+   fun:_ZN19NotificationService6NotifyE16NotificationTypeRK18NotificationSourceRK19NotificationDetails
+   fun:_ZN20NavigationController9LoadEntryEP15NavigationEntry
+   fun:_ZN20NavigationController7LoadURLERK4GURLS2_j
+   fun:_ZN7Browser14OpenURLAtIndexEP11TabContentsRK4GURLS4_21WindowOpenDispositionjib
+   fun:_ZN7Browser14OpenCurrentURLEv
+}
