Fix some memory leaks.

tools/heapcheck/suppressions.txt

Index: tools/heapcheck/suppressions.txt
diff --git a/tools/heapcheck/suppressions.txt b/tools/heapcheck/suppressions.txt
index 8ee2ac49066d8b464096bdaf03104135dbc6ed47..f8c6adbcf9fcede8ca5edc1d9a9647715bc23616 100644
--- a/tools/heapcheck/suppressions.txt
+++ b/tools/heapcheck/suppressions.txt
@@ -1400,16 +1400,6 @@
    fun:DownloadManager::OnPathExistenceAvailable
 }
 {
-   bug_112795
-   Heapcheck:Leak
-   fun:XGetAtomName
-   fun:ui::TouchFactory::UpdateDeviceList
-   fun:TouchFactory
-   fun:DefaultSingletonTraits::New
-   fun:Singleton::get
-   fun:ui::TouchFactory::GetInstance
-}
-{
    bug_112798_a
    Heapcheck:Leak
    ...
@@ -1436,12 +1426,6 @@
    ...
    fun:RenderWidgetHostViewAuraTest::TearDown
 }
-{
-   bug_112803
-   Heapcheck:Leak
-   ...
-   fun:views::ViewLayerTest_OrphanLayerAfterViewRemove_Test::TestBody
-}
 
 # These are temporary suppressions for the CrOS bot to be used until the stacks are fixed.
 {
@@ -1831,4 +1815,3 @@
    fun:GetNumObjects
    ...
 }
-