Scale bounds in aura-mus client-lib and NativeWidgetMus in hdpi mode.

ui/aura/mus/window_port_mus.h

 // Copyright 2016 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.
 
 #ifndef UI_AURA_MUS_WINDOW_PORT_MUS_H_
 #define UI_AURA_MUS_WINDOW_PORT_MUS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 115 matching lines @@
     // automatically removed. Instead the change is explicitly removed.
     TRANSIENT_REORDER,
     VISIBLE,
   };
 
   // Contains data needed to identify a change from the server.
   struct ServerChangeData {
     // Applies to ADD, ADD_TRANSIENT, REMOVE, REMOVE_TRANSIENT, REORDER and
     // TRANSIENT_REORDER.
     Id child_id;
-    // Applies to BOUNDS.
+    // Applies to BOUNDS. This should be in pixels.

[sky, 2016/12/15 22:07:32]

Name the member as such to reinforce that, e.g. bounds_in_pixels.

[riajiang, 2016/12/19 23:51:55]

In order to move conversions to WTC, this now takes in bounds_in_dip.

     gfx::Rect bounds;
     // Applies to VISIBLE.
     bool visible;
     // Applies to PROPERTY.
     std::string property_name;
   };
 
   // Used to identify a change the server.
   struct ServerChange {
     ServerChangeType type;
@@ skipping 103 matching lines @@
   std::unique_ptr<SurfaceInfo> surface_info_;
 
   ui::mojom::Cursor predefined_cursor_ = ui::mojom::Cursor::CURSOR_NULL;
 
   DISALLOW_COPY_AND_ASSIGN(WindowPortMus);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_MUS_WINDOW_PORT_MUS_H_