mus: Add PointerWatcher for passively observing mouse and touch events

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 6d60f3ebfd36683f26bb1098f581766e88995b57..ea0b0c73a0270f5c3c35710e07c8028aff7a55b5 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -7,6 +7,7 @@
 #include <stddef.h>
 
 #include "ash/content/gpu_support_impl.h"
+#include "ash/pointer_watcher_delegate_aura.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
@@ -154,6 +155,11 @@ ash::ShelfDelegate* ChromeShellDelegate::CreateShelfDelegate(
   return shelf_delegate_;
 }
 
+ash::PointerWatcherDelegate*
+ChromeShellDelegate::CreatePointerWatcherDelegate() {
+  return new ash::PointerWatcherDelegateAura();
+}
+
 ui::MenuModel* ChromeShellDelegate::CreateContextMenu(
     ash::Shelf* shelf,
     const ash::ShelfItem* item) {