Autofill heapcheck and valgrind leak in PersonalDataManager unit test fixed

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 # running overnight and removing outdated bugs/suppressions.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 3178 matching lines @@
    ...
    fun:gtk_text_buffer_select_range
    fun:_ZN23AutocompleteEditViewGtk16SetSelectedRangeERKNS_9CharRangeE
    fun:_ZN23AutocompleteEditViewGtk23SetTextAndSelectedRangeERKSbIwSt11char_traitsIwESaIwEERKNS_9CharRangeE
    fun:_ZN23AutocompleteEditViewGtk24SetWindowTextAndCaretPosERKSbIwSt11char_traitsIwESaIwEEj
    fun:_ZN21AutocompleteEditModel6RevertEv
    fun:_ZN23AutocompleteEditViewGtk9RevertAllEv
    fun:_ZN23AutocompleteEditViewGtk6UpdateEPK11TabContents
    fun:_ZN15LocationBarView6UpdateEPK11TabContents
 }
-{
-   bug_61988_a
-   Memcheck:Leak
-   fun:_Znw*
-   ...
-   fun:_ZN14TestingProfile20CreateWebDataServiceEb
-   fun:_ZN23PersonalDataManagerTest5SetUpEv
-}
-{
-   bug_61988_b
-   Memcheck:Leak
-   ...
-   fun:_ZN36PersonalDataManagerTest_Refresh_Test8TestBodyEv
-}