Replace IDR window property use with gfx::ImageSkia icons.

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 "services/ui/public/interfaces/cursor.mojom";
 import "services/ui/public/interfaces/display/display.mojom";
 import "services/ui/public/interfaces/event_matcher.mojom";
 import "services/ui/public/interfaces/window_manager_constants.mojom";
@@ skipping 40 matching lines @@
   // at the time the window is added to its parent, which must be a top level
   // window (created by way of WindowTree::NewTopLevelWindow()). Type: bool.
   const string kRendererParentTitleArea_Property =
       "render-parent-non-client-area";
   // The window's resize behavior. Type: ResizeBehavior.
   const string kResizeBehavior_Property = "prop:resize-behavior";
   // Bounds the window is restored to. Type: gfx::Rect.
   const string kRestoreBounds_Property = "prop:restore-bounds";
   // Shadow style for the window. Type: mojom::ShadowStyle.
   const string kShadowStyle_Property = "prop:shadow-style";
-  // The image resource ID to be used as the shelf item's icon. Type: int
-  const string kShelfIconResourceId_Property = "prop:shelf-icon-resource-id";
   // The ID of the shelf item corresponding to this window. Type: int
   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. Type: ShowState.
   const string kShowState_Property = "prop:show-state";
   // The window bounds as set by user input. Type: gfx::Rect.
   const string kUserSetBounds_Property = "prop:user-set-bounds";
   // The window's app icon. Type: SkBitmap
@@ skipping 109 matching lines @@
   WmSetNonClientCursor(uint32 window_id, Cursor cursor_id);
 
   // Response from WmCreateTopLevelWindow() informing the client of the id for
   // the new window.
   OnWmCreatedTopLevelWindow(uint32 change_id, uint32 window_id);
 
   // See description in WindowManager::OnAccelerator(). |ack_id| is the value
   // that was passed to OnAccelerator().
   OnAcceleratorAck(uint32 ack_id, EventResult event_result);
 };