Reland: Implement Aura side of unified touch text selection for contents

ui/views/views_delegate.cc

Index: ui/views/views_delegate.cc
diff --git a/ui/views/views_delegate.cc b/ui/views/views_delegate.cc
index de9ccbbfd92d9b11d9b8e93e2a8915e44b173540..5da36fb946b4a67f3fa62cc20b77d85909eaf1ea 100644
--- a/ui/views/views_delegate.cc
+++ b/ui/views/views_delegate.cc
@@ -4,12 +4,14 @@
 
 #include "ui/views/views_delegate.h"
 
+#include "ui/views/touchui/touch_selection_menu_runner_views.h"
 #include "ui/views/views_touch_selection_controller_factory.h"
 
 namespace views {
 
 ViewsDelegate::ViewsDelegate()
-    : views_tsc_factory_(new ViewsTouchEditingControllerFactory) {
+    : touch_selection_menu_runner_(new TouchSelectionMenuRunnerViews()),
+      views_tsc_factory_(new ViewsTouchEditingControllerFactory) {
   ui::TouchEditingControllerFactory::SetInstance(views_tsc_factory_.get());
 }