Fix BrowserAccessibilityManager valgrind errors.

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 7d073160bcef89069b038212799425837fd3da66..9e3b69cee22f1a0bdc8c170e35241a938f5ec135 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -5198,43 +5198,6 @@
    fun:_ZN71SyncUIUtilTest_ConstructAboutInformationWithUnrecoverableErrorTest_Test8TestBodyEv
 }
 {
-   bug_91845_a
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN27BrowserAccessibilityManager23CreateAccessibilityTreeEP20BrowserAccessibilityRKN11webkit_glue16WebAccessibilityEi
-   ...
-   fun:_ZN60BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test8TestBodyEv
-}
-{
-   bug_91845_b
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN27BrowserAccessibilityManager6CreateEP10_GtkWidgetRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN27BrowserAccessibilityManager19CreateEmptyDocumentEP10_GtkWidgetN11webkit_glue16WebAccessibility5StateEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN60BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test8TestBodyEv
-}
-{
-   bug_91845_c
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN9__gnu_cxx13new_allocatorIPNS_15_Hashtable_nodeISt4pairIKiP20BrowserAccessibilityEEEE8allocateEmPKv
-   fun:_ZNSt12_Vector_baseIPN9__gnu_cxx15_Hashtable_nodeISt4pairIKiP20BrowserAccessibilityEEESaIS8_EE11_M_allocateEm
-   fun:_ZNSt6vectorIPN9__gnu_cxx15_Hashtable_nodeISt4pairIKiP20BrowserAccessibilityEEESaIS8_EE20_M_allocate_and_copyIPS8_EESC_mT_SD_
-   fun:_ZNSt6vectorIPN9__gnu_cxx15_Hashtable_nodeISt4pairIKiP20BrowserAccessibilityEEESaIS8_EE7reserveEm
-   fun:_ZN9__gnu_cxx9hashtableISt4pairIKiP20BrowserAccessibilityEiNS_4hashIiEESt10_Select1stIS5_ESt8equal_toIiESaIS4_EE21_M_initialize_bucketsEm
-   fun:_ZN9__gnu_cxx9hashtableISt4pairIKiP20BrowserAccessibilityEiNS_4hashIiEESt10_Select1stIS5_ESt8equal_toIiESaIS4_EEC2EmRKS7_RKSB_RKSaIS5_E
-   fun:_ZN9__gnu_cxx9hashtableISt4pairIKiP20BrowserAccessibilityEiNS_4hashIiEESt10_Select1stIS5_ESt8equal_toIiESaIS4_EEC1EmRKS7_RKSB_RKSaIS5_E
-   fun:_ZN9__gnu_cxx8hash_mapIiP20BrowserAccessibilityNS_4hashIiEESt8equal_toIiESaIS2_EEC2Ev
-   fun:_ZN9__gnu_cxx8hash_mapIiP20BrowserAccessibilityNS_4hashIiEESt8equal_toIiESaIS2_EEC1Ev
-   fun:_ZN27BrowserAccessibilityManagerC2EP6NSViewRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN30BrowserAccessibilityManagerMacC2EP6NSViewRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN30BrowserAccessibilityManagerMacC1EP6NSViewRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN27BrowserAccessibilityManager6CreateEP6NSViewRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN27BrowserAccessibilityManager19CreateEmptyDocumentEP6NSViewN11webkit_glue16WebAccessibility5StateEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN60BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test8TestBodyEv
-}
-{
    bug_92123
    Memcheck:Leak
    fun:_Znw*
@@ -5289,16 +5252,6 @@
    fun:_ZN4base6subtle18TaskClosureAdapter3RunEv
 }
 {
-   bug_92396
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN27BrowserAccessibilityManager6CreateEP6NSViewRKN11webkit_glue16WebAccessibilityEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN27BrowserAccessibilityManager19CreateEmptyDocumentEP6NSViewN11webkit_glue16WebAccessibility5StateEP28BrowserAccessibilityDelegateP27BrowserAccessibilityFactory
-   fun:_ZN60BrowserAccessibilityManagerTest_TestCreateEmptyDocument_Test8TestBodyEv
-   fun:_ZN7testing8internal38HandleSehExceptionsInMethodIfSupportedINS_4TestEvEET0_PT_MS4_FS3_vEPKc
-   fun:_ZN7testing8internal35HandleExceptionsInMethodIfSupportedINS_4TestEvEET0_PT_MS4_FS3_vEPKc
-}
-{
    bug_92548
    Memcheck:Leak
    fun:_Znw*