Make it possible to set the display mode from Chromium

content/public/browser/web_contents_delegate.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/navigation_type.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/common/window_container_type.h"
+#include "third_party/WebKit/public/platform/WebDisplayMode.h"
 #include "third_party/WebKit/public/web/WebDragOperation.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/window_open_disposition.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/native_widget_types.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
@@ skipping 321 matching lines @@
   // URL's origin should be used.
   virtual void EnterFullscreenModeForTab(WebContents* web_contents,
                                          const GURL& origin) {}
 
   // Called when the renderer puts a tab out of fullscreen mode.
   virtual void ExitFullscreenModeForTab(WebContents*) {}
 
   virtual bool IsFullscreenForTabOrPending(
       const WebContents* web_contents) const;
 
+  // Returns the actual display mode of the top-level browsing context.
+  // For example, it should return 'blink::WebDisplayModeFullscreen' whenever
+  // the browser window is put to fullscreen mode (either by the end user,
+  // or HTML API or from a web manifest setting).
+  // See http://w3c.github.io/manifest/#dfn-display-mode
+  virtual blink::WebDisplayMode GetDisplayMode(
+      const WebContents* web_contents) const;
+
   // Register a new handler for URL requests with the given scheme.
   // |user_gesture| is true if the registration is made in the context of a user
   // gesture.
   virtual void RegisterProtocolHandler(WebContents* web_contents,
                                        const std::string& protocol,
                                        const GURL& url,
                                        bool user_gesture) {}
 
   // Unregister the registered handler for URL requests with the given scheme.
   // |user_gesture| is true if the registration is made in the context of a user
@@ skipping 114 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_