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 4c1ae4f6b90ae5d70eba822e96959723e7ae3a04..7646294a7734d79a64a28c3d30cf63465d1d409e 100644
--- a/ui/views/views_delegate.cc
+++ b/ui/views/views_delegate.cc
@@ -5,6 +5,7 @@
 #include "ui/views/views_delegate.h"
 
 #include "base/command_line.h"
+#include "ui/views/touchui/touch_selection_menu_runner_views.h"
 #include "ui/views/views_touch_selection_controller_factory.h"
 
 namespace views {
@@ -12,6 +13,10 @@ namespace views {
 ViewsDelegate::ViewsDelegate()
     : views_tsc_factory_(new ViewsTouchEditingControllerFactory) {
   ui::TouchEditingControllerFactory::SetInstance(views_tsc_factory_.get());
+
+#if defined(USE_AURA)
+  touch_selection_menu_runner_.reset(new TouchSelectionMenuRunnerViews());
+#endif  // defined(USE_AURA)
 }
 
 ViewsDelegate::~ViewsDelegate() {