Enabling page visibility api in the chrome browser.

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2011 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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 468 matching lines @@
 
   // Notification that a worker process has crashed.
   void WorkerCrashed() {}
 
   // Ask the user if they want to allow the view to show desktop notifications.
   // Returns true if the delegate will take care of asking the user, otherwise
   // the caller will do the default behavior.
   bool RequestDesktopNotificationPermission(const GURL& source_origin,
                                             int callback_context);
 
+  // Returns ture iff the render view host is hidden.

[brettw, 2011/05/18 22:11:38]

ture -> true.
iff -> if ("only if" is meaningless in this context and makes it more difficult
to read).

[Shishir, 2011/05/20 03:48:19]

Done.

+  virtual bool IsHidden() const { return false; }
+
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_