mash: Serialize ShelfIDs for property conversion and transport.

services/ui/public/interfaces/window_manager.mojom

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module ui.mojom;
 
 import "cc/ipc/frame_sink_id.mojom";
 import "cc/ipc/local_surface_id.mojom";
 import "services/ui/public/interfaces/cursor/cursor.mojom";
 import "services/ui/public/interfaces/event_matcher.mojom";
@@ skipping 112 matching lines @@
   // Type: ResizeBehavior.
   const string kResizeBehavior_Property = "prop:resize-behavior";
 
   // Bounds the window is restored to. Maps to client::kRestoreBoundsKey.
   // Type: gfx::Rect.
   const string kRestoreBounds_Property = "prop:restore-bounds";
 
   // See ShadowElevation for details. Type: wm::ShadowElevation.
   const string kShadowElevation_Property = "prop:shadow-elevation";
 
-  // The shelf ID struct. Maps to ash::kShelfIDKey. Type: ash::ShelfID.
+  // The serialized shelf id. Maps to ash::kShelfIDKey. Type: mojom::String.
   const string kShelfID_Property = "prop:shelf-id";
 
   // The type of item to be shown on the shelf for this window. Type: int
   // A few ash::ShelfItemType values are supported; TYPE_UNKNOWN means no item.
   const string kShelfItemType_Property = "prop:shelf-item-type";
 
   // The window's show state. Maps to aura::client::kShowStateKey.
   // Type: ShowState.
   const string kShowState_Property = "prop:show-state";
 
@@ skipping 160 matching lines @@
   OnWmCreatedTopLevelWindow(uint32 change_id, uint32 window_id);
 
   // See description in WindowManager::OnAccelerator(). |ack_id| is the value
   // that was passed to OnAccelerator(). If the accelerator is a pre-target
   // handler and |event_result| is UNHANDLED, then |properties| is added to
   // the KeyEvent that is dispatched to the client with the focused window.
   OnAcceleratorAck(uint32 ack_id,
                    EventResult event_result,
                    map<string, array<uint8>> properties);
 };