Persist the Instant API to committed search result pages.

chrome/browser/instant/instant_unload_handler.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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 CHROME_BROWSER_INSTANT_INSTANT_UNLOAD_HANDLER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_UNLOAD_HANDLER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 
 class Browser;
-class TabContents;
+
+namespace content {
+class WebContents;
+}
 
 // InstantUnloadHandler ensures that the beforeunload and unload handlers are
 // run when using Instant. When the user commits the Instant preview the
-// existing TabContents is passed to RunUnloadListenersOrDestroy(). If the tab
+// existing WebContents is passed to RunUnloadListenersOrDestroy(). If the tab
 // has no beforeunload or unload listeners, the tab is deleted; otherwise the
 // beforeunload and unload listeners are executed. If the beforeunload listener
 // shows a dialog the tab is added back to the tabstrip at its original location
 // next to the Instant page.
 class InstantUnloadHandler {
  public:
   explicit InstantUnloadHandler(Browser* browser);
   ~InstantUnloadHandler();
 
   // See class description for details on what this does.
-  void RunUnloadListenersOrDestroy(TabContents* tab_contents, int index);
+  void RunUnloadListenersOrDestroy(content::WebContents* contents, int index);
 
  private:
   class WebContentsDelegateImpl;
 
   // Invoked if the tab is to be shown, at |index| on the tab strip. This
   // happens if the before unload listener returns a string. Takes ownership of
-  // |delegate| and |tab|.
-  void Activate(WebContentsDelegateImpl* delegate, TabContents* tab, int index);
+  // |delegate| and |contents|.
+  void Activate(WebContentsDelegateImpl* delegate,
+                content::WebContents* contents,
+                int index);
 
   // Destroys the old tab. This is invoked if script tries to close the page.
   void Destroy(WebContentsDelegateImpl* delegate);
 
   // TODO(sky): Browser really needs to wait to close until there are no more
   // tabs managed by InstantUnloadHandler.
   Browser* const browser_;
 
   ScopedVector<WebContentsDelegateImpl> delegates_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantUnloadHandler);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_UNLOAD_HANDLER_H_