Adds some debugging info in hopes of tracking leak in

tools/valgrind/memcheck/suppressions.txt

 # There are three 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 # running overnight and removing outdated bugs/suppressions.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 2617 matching lines @@
    ...
    fun:_ZN11ProfileImpl36RegisterExtensionWithRequestContextsEP9Extension
    fun:_ZN17ExtensionsService21NotifyExtensionLoadedEP9Extension
    fun:_ZN17ExtensionsService17OnExtensionLoadedEP9Extensionb
    fun:_ZN17ExtensionsService23LoadComponentExtensionsEv
    fun:_ZN17ExtensionsService17LoadAllExtensionsEv
    fun:_ZN17ExtensionsService4InitEv
    fun:_ZN11ProfileImpl14InitExtensionsEv
 }
 {
-   bug_40475
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN8TabStrip20NewTabAnimation1DoneEv
-   fun:_Z16DispatchToMethodI8TabStripMS0_FvvEEvPT_T0_RK6Tuple0
-   fun:_ZN4base9BaseTimerI8TabStripLb0EE9TimerTask3RunEv
-   fun:_ZN11MessageLoop7RunTaskEP4Task
-   fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
-   fun:_ZN11MessageLoop13DoDelayedWorkEPN4base4TimeE
-   fun:_ZN4base16MessagePumpForUI17RunWithDispatcherEPNS_11MessagePump8DelegateEPNS0_10DispatcherE
-   fun:_ZN11MessageLoop11RunInternalEv
-   fun:_ZN11MessageLoop10RunHandlerEv
-   fun:_ZN16MessageLoopForUI3RunEPN4base16MessagePumpForUI10DispatcherE
-   fun:_ZN59_GLOBAL__N_chrome_browser_browser_main.cc_00000000_4D8C310C16RunUIMessageLoopEP14BrowserProcess
-   fun:_Z11BrowserMainRK18MainFunctionParams
-   fun:ChromeMain
-   fun:main
-}
-{
    bug_40481
    Memcheck:Leak
    fun:_Znw*
    fun:_ZN8chromeos11MockFactory16CreateURLFetcherEiRK4GURLN10URLFetcher11RequestTypeEPNS4_8DelegateE
    fun:_ZN10URLFetcher6CreateEiRK4GURLNS_11RequestTypeEPNS_8DelegateE
    fun:_ZN8chromeos19GoogleAuthenticator12AuthenticateEP7ProfileRKSsS4_
    fun:_Z16DispatchToMethodIN8chromeos19GoogleAuthenticatorEMNS0_13AuthenticatorEFbP7ProfileRKSsS6_EP14TestingProfileSsSsEvPT_T0_RK6Tuple3IT1_T2_T3_E
    fun:_ZN14RunnableMethodIN8chromeos19GoogleAuthenticatorEMNS0_13AuthenticatorEFbP7ProfileRKSsS6_E6Tuple3IP14TestingProfileSsSsEE3RunEv
    fun:_ZN11MessageLoop7RunTaskEP4Task
    fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
    fun:_ZN11MessageLoop6DoWorkEv
    fun:_ZN4base18MessagePumpDefault3RunEPNS_11MessagePump8DelegateE
    fun:_ZN11MessageLoop11RunInternalEv
    fun:_ZN11MessageLoop10RunHandlerEv
 }