Add flag to enable immersive fullscreen for v2 apps

apps/shell_window.h

 // Copyright 2013 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 APPS_SHELL_WINDOW_H_
 #define APPS_SHELL_WINDOW_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/extension_icon_image.h"
@@ skipping 74 matching lines @@
     WINDOW_TYPE_PANEL    = 1 << 1,  // OS controlled panel window (Ash only).
     WINDOW_TYPE_V1_PANEL = 1 << 2,  // For apps v1 support in Ash; deprecate
                                     // with v1 apps.
   };
 
   enum Frame {
     FRAME_CHROME,  // Chrome-style window frame.
     FRAME_NONE,  // Frameless window.
   };
 
+  enum FullscreenType {
+    // Not fullscreen.
+    FULLSCREEN_TYPE_NONE = 0,
+
+    // Fullscreen entered by the app.window api.
+    FULLSCREEN_TYPE_WINDOW_API = 1 << 0,
+
+    // Fullscreen entered by HTML requestFullscreen().
+    FULLSCREEN_TYPE_HTML_API = 1 << 1,
+
+    // Fullscreen entered by the OS. ChromeOS uses this type of fullscreen to
+    // enter immersive fullscreen when the user hits the <F4> key.
+    FULLSCREEN_TYPE_OS = 1 << 2
+  };
+
   class SizeConstraints {
    public:
     // The value SizeConstraints uses to represent an unbounded width or height.
     // This is an enum so that it can be declared inline here.
     enum { kUnboundedSize = 0 };
 
     SizeConstraints();
     SizeConstraints(const gfx::Size& min_size, const gfx::Size& max_size);
     ~SizeConstraints();
 
@@ skipping 172 matching lines @@
   // callback. Also called externally for v1 apps using Ash Panels.
   void UpdateAppIcon(const gfx::Image& image);
 
   // Transitions window into fullscreen, maximized, minimized or restores based
   // on chrome.app.window API.
   void Fullscreen();
   void Maximize();
   void Minimize();
   void Restore();
 
+  // Transitions to OS fullscreen. See FULLSCREEN_TYPE_OS for more details.
+  void OSFullscreen();
+
   // Set the minimum and maximum size that this window is allowed to be.
   void SetMinimumSize(const gfx::Size& min_size);
   void SetMaximumSize(const gfx::Size& max_size);
 
   enum ShowType {
     SHOW_ACTIVE,
     SHOW_INACTIVE
   };
 
   // Shows the window if its contents have been painted; otherwise flags the
@@ skipping 140 matching lines @@
 
   // An object to load the app's icon as an extension resource.
   scoped_ptr<extensions::IconImage> app_icon_image_;
 
   scoped_ptr<NativeAppWindow> native_app_window_;
   scoped_ptr<ShellWindowContents> shell_window_contents_;
   scoped_ptr<Delegate> delegate_;
 
   base::WeakPtrFactory<ShellWindow> image_loader_ptr_factory_;
 
-  // Fullscreen entered by app.window api.
-  bool fullscreen_for_window_api_;
-  // Fullscreen entered by HTML requestFullscreen.
-  bool fullscreen_for_tab_;
+  // Bit field of FullscreenType.
+  int fullscreen_types_;
 
   // Size constraints on the window.
   SizeConstraints size_constraints_;
 
   // Show has been called, so the window should be shown once the first visually
   // non-empty paint occurs.
   bool show_on_first_paint_;
 
   // The first visually non-empty paint has completed.
   bool first_paint_complete_;
 
   // Whether the delayed Show() call was for an active or inactive window.
   ShowType delayed_show_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellWindow);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_WINDOW_H_