Autofill: unit test / valgrind; gyp tweak

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 # running overnight and removing outdated bugs/suppressions.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 5174 matching lines @@
    fun:_ZN15DownloadService18GetDownloadManagerEv
    fun:_ZN29ExtensionDownloadsEventRouterC*
    fun:_ZN16ExtensionService16InitEventRoutersEv
    fun:_ZN16ExtensionService7ObserveEiRKN7content18NotificationSourceERKNS0_19NotificationDetailsE
    ...
    fun:_ZN23NotificationServiceImpl6NotifyEiRKN7content18NotificationSourceERKNS0_19NotificationDetailsE
    fun:_ZN14ProfileManager16OnImportFinishedEP7Profile
    fun:_ZN22ChromeBrowserMainParts25PreMainMessageLoopRunImplEv
 }
 {
-   bug_102256
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN26AutocompleteHistoryManager15SendSuggestions*
-   fun:_ZN52AutocompleteHistoryManagerTest_ExternalDelegate_Test8TestBodyEv
-}
-{
    bug_102257
    Memcheck:Cond
    ...
    fun:_ZN2v88internalL6InvokeEbNS0_6HandleINS0_10JSFunctionEEENS1_INS0_6ObjectEEEiPS5_Pb
    fun:_ZN2v88internal9Execution4CallENS0_6HandleINS0_6ObjectEEES4_iPS4_Pbb
 }
 
 #-----------------------------------------------------------------------
 # 4. These only occur on our Google workstations
 {
@@ skipping 23 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
 }