Fix a memory leak in PasswordGenerationManager.

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 # running overnight and removing outdated bugs/suppressions.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 6008 matching lines @@
    bug_145710
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN12TestInstance27TestLeakedObjectDestructorsEv
    fun:_ZN12TestInstance8RunTestsERKSs
    fun:_ZN15TestingInstance12ExecuteTestsEi
    fun:_ZN2pp25CompletionCallbackFactoryI15TestingInstanceNS_22ThreadSafeThreadTraitsEE11Dispatcher0IMS1_FviEEclEPS1_i
    fun:_ZN2pp25CompletionCallbackFactoryI15TestingInstanceNS_22ThreadSafeThreadTraitsEE12CallbackDataINS3_11Dispatcher0IMS1_FviEEEE5ThunkEPvi
 }
 {
-   bug_145711
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN6webkit5forms22PasswordFormDomManager18CreatePasswordFormERKN6WebKit14WebFormElementE
-   fun:_ZN8autofill25PasswordGenerationManager11handleClickERN6WebKit15WebInputElementE
-   fun:_ZN6WebKit22TextFieldDecoratorImpl11handleClickEPN7WebCore16HTMLInputElementE
-   fun:_ZN7WebCore26TextFieldDecorationElement19defaultEventHandlerEPNS_5EventE
-   fun:_ZN7WebCore15EventDispatcher24dispatchEventPostProcessEN3WTF10PassRefPtrINS_5EventEEEPv
-   fun:_ZN7WebCore15EventDispatcher13dispatchEventEN3WTF10PassRefPtrINS_5EventEEE
-}
-{
-   bug_145712

[Lei Zhang, 2012/08/31 17:08:43]

Did you accidentally remove a second suppression here?

-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN6WebKit25NotificationPresenterImpl17requestPermissionEPN7WebCore22ScriptExecutionContextEN3WTF10PassRefPtrINS1_12VoidCallbackEEE
-   fun:_ZN7WebCore18NotificationCenter17requestPermissionEN3WTF10PassRefPtrINS_12VoidCallbackEEE
-   fun:_ZN7WebCore20V8NotificationCenter25requestPermissionCallbackERKN2v89ArgumentsE
-}
-{
    bug_145723
    Memcheck:Leak
    fun:_Znw*
    fun:_Z20NewExtensionFunctionI25TabsExecuteScriptFunctionEP17ExtensionFunctionv
    fun:_ZN25ExtensionFunctionRegistry11NewFunctionERKSs
    fun:_ZN27ExtensionFunctionDispatcher23CreateExtensionFunctionERK31ExtensionHostMsg_Request_ParamsPKN10extensions9ExtensionEiRKNS3_10ProcessMapEPNS3_12ExtensionAPIEPvPN3IPC6SenderEPN7content14RenderViewHostEi
    fun:_ZN27ExtensionFunctionDispatcher8DispatchERK31ExtensionHostMsg_Request_ParamsPN7content14RenderViewHostE
    fun:_ZN10extensions13ExtensionHost9OnRequestERK31ExtensionHostMsg_Request_Params
 }
 {
@@ skipping 95 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
 }