Update ConstrainedWindowViews appearance according to mock

ui/views/focus_border.h

+// Copyright (c) 2012 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_VIEWS_FOCUS_BORDER_H_
+#define UI_VIEWS_FOCUS_BORDER_H_
+
+#include "ui/views/views_export.h"
+#include "base/basictypes.h"
+
+namespace gfx {
+class Canvas;
+}
+
+namespace views {
+class View;
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Focus border class.
+//
+// The focus border class is used to display an indication of focus on a view.
+// To set a focus border on a view, call SetFocusBorder on the view.  Once set
+// on a view, the focus border is owned by the view.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+class VIEWS_EXPORT FocusBorder {
+ public:
+  virtual ~FocusBorder();
+
+  // Creates the default inset dashed line focus border.
+  static FocusBorder* CreateDashedFocusBorder();
+  static FocusBorder* CreateDashedFocusBorder(
+      int left, int top, int right, int bottom);
+
+  // Renders the focus border for the specified view.
+  virtual void Paint(const View& view, gfx::Canvas* canvas) const = 0;
+
+ protected:
+  FocusBorder();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FocusBorder);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_FOCUS_BORDER_H_