Valgrind: Fix the suppression for bug 16092 since PendingTask has moved.

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 # running overnight and removing outdated bugs/suppressions.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 1116 matching lines @@
    Memcheck:Leak
    fun:*
    fun:_ZN11MessageLoopC1ENS_4TypeE
    fun:_ZN4base6Thread10ThreadMainEv
 }
 {
    # very common in ui tests
    bug_16092b
    Memcheck:Leak
    ...
-   fun:_ZNSt11_Deque_baseIN11MessageLoop11PendingTaskESaIS1_EE17_M_initialize_mapE*
+   fun:_ZNSt11_Deque_baseIN4base11PendingTaskESaIS1_EE17_M_initialize_mapE*
    ...
    fun:_ZN11MessageLoopC1ENS_4TypeE
-   fun:_ZN4base6Thread10ThreadMainEv
 }
 {
    # very common in ui tests
    bug_16092c
    Memcheck:Leak
    ...
    fun:_ZNSt14priority_queueIN11MessageLoop11PendingTaskESt6vectorIS1_SaIS1_EESt4lessIS1_EEC1ERKS6_RKS4_
    fun:_ZN11MessageLoopC1ENS_4TypeE
    fun:_ZN4base6Thread10ThreadMainEv
 }
@@ skipping 4102 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
 }