Moves CustomFrameViewAsh to common

ash/common/wm/immersive/wm_immersive_fullscreen_controller.h

Index: ash/common/wm/immersive/wm_immersive_fullscreen_controller.h
diff --git a/ash/common/wm/immersive/wm_immersive_fullscreen_controller.h b/ash/common/wm/immersive/wm_immersive_fullscreen_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..5e907f3b0b77e164d6059cae845116f9143831a7
--- /dev/null
+++ b/ash/common/wm/immersive/wm_immersive_fullscreen_controller.h
@@ -0,0 +1,58 @@
+// 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 ASH_COMMON_WM_IMMERSIVE_WM_IMMERSIVE_FULLSCREEN_CONTROLLER_H_
+#define ASH_COMMON_WM_IMMERSIVE_WM_IMMERSIVE_FULLSCREEN_CONTROLLER_H_
+
+#include "ash/ash_export.h"
+
+namespace views {
+class View;
+class Widget;
+}
+
+namespace ash {
+
+class WmImmersiveFullscreenControllerDelegate;
+
+// Controller for immersive mode. See ImmersiveFullscreenController for details.
+class ASH_EXPORT WmImmersiveFullscreenController {
+ public:
+  // The enum is used for an enumerated histogram. New items should be only
+  // added to the end.
+  enum WindowType {
+    WINDOW_TYPE_OTHER,
+    WINDOW_TYPE_BROWSER,
+    WINDOW_TYPE_HOSTED_APP,
+    WINDOW_TYPE_PACKAGED_APP,
+    WINDOW_TYPE_COUNT
+  };
+
+  virtual ~WmImmersiveFullscreenController() {}
+
+  // Initializes the controller. Must be called prior to enabling immersive
+  // fullscreen via SetEnabled(). |top_container| is used to keep the
+  // top-of-window views revealed when a child of |top_container| has focus.
+  // |top_container| does not affect which mouse and touch events keep the
+  // top-of-window views revealed. |widget| is the widget to make fullscreen.
+  virtual void Init(WmImmersiveFullscreenControllerDelegate* delegate,
+                    views::Widget* widget,
+                    views::View* top_container) = 0;
+
+  // Enables or disables immersive fullscreen.
+  // |window_type| is the type of window which is put in immersive fullscreen.
+  // It is only used for histogramming.
+  virtual void SetEnabled(WindowType window_type, bool enable) = 0;
+
+  // Returns true if in immersive fullscreen.
+  virtual bool IsEnabled() const = 0;
+
+  // Returns true if in immersive fullscreen and the top-of-window views are
+  // fully or partially visible.
+  virtual bool IsRevealed() const = 0;
+};
+
+}  // namespace ash
+
+#endif  // ASH_COMMON_WM_IMMERSIVE_WM_IMMERSIVE_FULLSCREEN_CONTROLLER_H_