Fix some memory leaks.

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 # running overnight and removing outdated bugs/suppressions.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 5776 matching lines @@
    fun:_ZN2v82V818AddMessageListenerEPFvNS_6HandleINS_7MessageEEENS1_INS_5ValueEEEES5_
    fun:_ZN7WebCore27WorkerContextExecutionProxy19initContextIfNeededEv
    fun:_ZN7WebCore27WorkerContextExecutionProxy8evaluateERKN3WTF6StringES4_RKNS1_12TextPositionEPNS_27WorkerContextExecutionStateE
    fun:_ZN7WebCore22WorkerScriptController8evaluateERKNS_16ScriptSourceCodeEPNS_11ScriptValueE
    fun:_ZN7WebCore22WorkerScriptController8evaluateERKNS_16ScriptSourceCodeE
    fun:_ZN7WebCore12WorkerThread12workerThreadEv
    fun:_ZN7WebCore12WorkerThread17workerThreadStartEPv
    fun:_ZN3WTFL16threadEntryPointEPv
 }
 {
-   bug_112795
-   Memcheck:Leak
-   fun:malloc
-   fun:XGetAtomName
-   fun:_ZN2ui12TouchFactory16UpdateDeviceListEP9_XDisplay
-   fun:_ZN2ui12TouchFactoryC1Ev
-   fun:_ZN22DefaultSingletonTraitsIN2ui12TouchFactoryEE3NewEv
-   fun:_ZN9SingletonIN2ui12TouchFactoryE22DefaultSingletonTraitsIS1_ES1_E3getEv
-   fun:_ZN2ui12TouchFactory11GetInstanceEv
-}
-{
    bug_112798_a
    Memcheck:Leak
    ...
    fun:_ZN2ui5Layer3AddEPS0_
    fun:_ZN4aura6Window8AddChildEPS0_
    fun:_ZN4aura6Window9SetParentEPS0_
    fun:_ZN24RenderWidgetHostViewAura16InitAsFullscreenEP20RenderWidgetHostView
    fun:_ZN44RenderWidgetHostViewAuraTest_Fullscreen_Test8TestBodyEv
 }
 {
    bug_112798_b
    Memcheck:Leak
    ...
    fun:_ZN4aura6Window11SetPropertyEPKcPv
    fun:_ZN4aura6client21SetActivationDelegateEPNS_6WindowEPNS0_18ActivationDelegateE
    fun:_ZN24RenderWidgetHostViewAuraC1EP16RenderWidgetHost
    fun:_ZN20RenderWidgetHostView19CreateViewForWidgetEP16RenderWidgetHost
 }
-{
-   bug_112803
-   Memcheck:Leak
-   fun:_Znw*
-   fun:_ZN5views45ViewLayerTest_OrphanLayerAfterViewRemove_Test8TestBodyEv
-}
 
 #-----------------------------------------------------------------------
 # 4. These only occur on our Google workstations
 
 {
    bug_todo_getdelim
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    ...
    fun:call_init
    fun:_dl_init
 }
 {
    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_todo_grep
    Memcheck:Leak
    fun:malloc
    obj:/bin/grep
    obj:/bin/grep
 }