Leaks in CookiesTreeModel tests

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 # running overnight and removing outdated bugs/suppressions.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 5209 matching lines @@
 }
 {
    bug_todo_getdelim2
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
    obj:/lib/libselinux.so.1
 }
+{
+   bug_91816_a
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN12_GLOBAL__N_120CookiesTreeModelTest5SetUpEv
+}
+{
+   bug_91816_b
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN12_GLOBAL__N_140CookiesTreeModelTest_OriginOrdering_Test8TestBodyEv
+}
+{
+   bug_91816_c
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN12_GLOBAL__N_141CookiesTreeModelTest_ContentSettings_Test8TestBodyEv
+}