cros: Initial structure for views-based lock.

ash/login/views/lock_contents_view.h

Index: ash/login/views/lock_contents_view.h
diff --git a/ash/login/views/lock_contents_view.h b/ash/login/views/lock_contents_view.h
new file mode 100644
index 0000000000000000000000000000000000000000..0738812c0ad7fa89cce08df2bd97602b7495ed29
--- /dev/null
+++ b/ash/login/views/lock_contents_view.h
@@ -0,0 +1,34 @@
+// Copyright 2017 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_LOGIN_VIEWS_CONTENTS_VIEW_H_
+#define ASH_LOGIN_VIEWS_CONTENTS_VIEW_H_
+
+#include "base/macros.h"
+#include "ui/views/controls/button/md_text_button.h"
+#include "ui/views/view.h"
+
+namespace ash {
+
+// LockContentsView hosts the root view for the lock screen. All other lock
+// screen views are embedded within this one. LockContentsView is per-display,
+// but the lock screen should only ever be shown on a single display, so there
+// is effectively only a single instance.

[James Cook, 2017/05/08 23:24:09]

nice comment

[jdufault, 2017/05/08 23:48:28]

:)

+class LockContentsView : public views::View, public views::ButtonListener {
+ public:
+  LockContentsView();
+  ~LockContentsView() override;
+
+  // views::ButtonListener:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+
+ private:
+  views::Button* unlock_button_;
+
+  DISALLOW_COPY_AND_ASSIGN(LockContentsView);
+};
+
+}  // namespace ash
+
+#endif  // ASH_LOGIN_VIEWS_CONTENTS_VIEW_H_