exo: Fix multi-display hardware cursor

components/exo/wm_helper_mus.cc

Index: components/exo/wm_helper_mus.cc
diff --git a/components/exo/wm_helper_mus.cc b/components/exo/wm_helper_mus.cc
index 105691c8c44cfd5e09e00ceeb087e1ddcc0fdbf2..19b9a950a475fdbd1edc980f96c7c4a308c4c3bd 100644
--- a/components/exo/wm_helper_mus.cc
+++ b/components/exo/wm_helper_mus.cc
@@ -37,13 +37,14 @@ WMHelperMus::~WMHelperMus() {
 ////////////////////////////////////////////////////////////////////////////////
 // WMHelperMus, private:
 
-const display::ManagedDisplayInfo WMHelperMus::GetDisplayInfo(
+const display::ManagedDisplayInfo& WMHelperMus::GetDisplayInfo(
     int64_t display_id) const {
   // TODO(penghuang): Return real display info when it is supported in mus.
-  return display::ManagedDisplayInfo(display_id, "", false);
+  static const display::ManagedDisplayInfo info;
+  return info;
 }
 
-aura::Window* WMHelperMus::GetContainer(int container_id) {
+aura::Window* WMHelperMus::GetContainer(int64_t display_id, int container_id) {
   NOTIMPLEMENTED();
   return nullptr;
 }