Handle modified displays in mustash.

ash/mus/accelerators/accelerator_controller_delegate_mus.cc

Index: ash/mus/accelerators/accelerator_controller_delegate_mus.cc
diff --git a/ash/mus/accelerators/accelerator_controller_delegate_mus.cc b/ash/mus/accelerators/accelerator_controller_delegate_mus.cc
index 39a7f232081c991b5dac2ae482a10f303c504e48..031f5e375638fa17c053c5d29b81b5de3ae31ef1 100644
--- a/ash/mus/accelerators/accelerator_controller_delegate_mus.cc
+++ b/ash/mus/accelerators/accelerator_controller_delegate_mus.cc
@@ -53,10 +53,10 @@ bool AcceleratorControllerDelegateMus::HandlesAction(AcceleratorAction action) {
 
 #if defined(OS_CHROMEOS)
     case DEV_ADD_REMOVE_DISPLAY:
+    case DEV_TOGGLE_UNIFIED_DESKTOP:
     case SWAP_PRIMARY_DISPLAY:
     case TOUCH_HUD_PROJECTION_TOGGLE:
       return true;
-    case DEV_TOGGLE_UNIFIED_DESKTOP:
     case LOCK_PRESSED:
     case LOCK_RELEASED:
     case POWER_PRESSED:
@@ -81,6 +81,7 @@ bool AcceleratorControllerDelegateMus::CanPerformAction(
 #if defined(OS_CHROMEOS)
   switch (action) {
     case DEV_ADD_REMOVE_DISPLAY:
+    case DEV_TOGGLE_UNIFIED_DESKTOP:
     case SWAP_PRIMARY_DISPLAY:
     case TOUCH_HUD_PROJECTION_TOGGLE:
       return true;
@@ -102,6 +103,14 @@ void AcceleratorControllerDelegateMus::PerformAction(
       test_display_controller->ToggleAddRemoveDisplay();
       break;
     }
+    case DEV_TOGGLE_UNIFIED_DESKTOP: {
+      // TODO(kylechar): This is hack. I'm just stealing the shortcut key to

[sky, 2016/10/19 23:37:59]

Please file a bug so we don't forget about it.

[kylechar, 2016/10/20 15:04:19]

Done.

+      // toggle display size in mus. This should be fixed by launch.
+      display::mojom::TestDisplayControllerPtr test_display_controller;
+      connector_->ConnectToInterface("service:ui", &test_display_controller);
+      test_display_controller->ToggleDisplayResolution();
+      break;
+    }
     case SWAP_PRIMARY_DISPLAY: {
       display::mojom::DisplayControllerPtr display_controller;
       connector_->ConnectToInterface("service:ui", &display_controller);