mash: Migrate some system user files to common.

ash/system/user/rounded_image_view.h

Index: ash/system/user/rounded_image_view.h
diff --git a/ash/system/user/rounded_image_view.h b/ash/system/user/rounded_image_view.h
deleted file mode 100644
index 8e191ae1306aadf69582a8032c5b1065d8adff50..0000000000000000000000000000000000000000
--- a/ash/system/user/rounded_image_view.h
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright 2014 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 ASH_SYSTEM_USER_ROUNDED_IMAGE_VIEW_H_
-#define ASH_SYSTEM_USER_ROUNDED_IMAGE_VIEW_H_
-
-#include "base/macros.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/views/view.h"
-
-namespace ash {
-namespace tray {
-
-// A custom image view with rounded edges.
-class RoundedImageView : public views::View {
- public:
-  // Constructs a new rounded image view with rounded corners of radius
-  // |corner_radius|. If |active_user| is set, the icon will be drawn in
-  // full colors - otherwise it will fade into the background.
-  RoundedImageView(int corner_radius, bool active_user);
-  ~RoundedImageView() override;
-
-  // Set the image that should be displayed. The image contents is copied to the
-  // receiver's image.
-  void SetImage(const gfx::ImageSkia& img, const gfx::Size& size);
-
-  // Set the radii of the corners independently.
-  void SetCornerRadii(int top_left,
-                      int top_right,
-                      int bottom_right,
-                      int bottom_left);
-
- private:
-  // Overridden from views::View.
-  gfx::Size GetPreferredSize() const override;
-  void OnPaint(gfx::Canvas* canvas) override;
-
-  gfx::ImageSkia image_;
-  gfx::ImageSkia resized_;
-  gfx::Size image_size_;
-  int corner_radius_[4];
-
-  // True if the given user is the active user and the icon should get
-  // painted as active.
-  bool active_user_;
-
-  DISALLOW_COPY_AND_ASSIGN(RoundedImageView);
-};
-
-}  // namespace tray
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_USER_ROUNDED_IMAGE_VIEW_H_