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diff --git a/chrome/browser/ui/webui/html_dialog_tab_contents_delegate.h b/chrome/browser/ui/webui/html_dialog_tab_contents_delegate.h
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+++ b/chrome/browser/ui/webui/html_dialog_tab_contents_delegate.h
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+// 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 CHROME_BROWSER_UI_WEBUI_HTML_DIALOG_TAB_CONTENTS_DELEGATE_H_
+#define CHROME_BROWSER_UI_WEBUI_HTML_DIALOG_TAB_CONTENTS_DELEGATE_H_
+#pragma once
+
+#include "chrome/browser/tab_contents/tab_contents_delegate.h"
+
+class Browser;
+class Profile;
+
+// This class implements (and mostly ignores) most of TabContentsDelegate for
+// use in an HTML dialog.  Subclasses need only override a few methods instead
+// of the everything from TabContentsDelegate; this way, implementations on
+// all platforms behave consistently.
+
+class HtmlDialogTabContentsDelegate : public TabContentsDelegate {
+ public:
+  // Profile must be non-NULL.
+  explicit HtmlDialogTabContentsDelegate(Profile* profile);
+
+  virtual ~HtmlDialogTabContentsDelegate();
+
+  // The returned profile is guaranteed to be original if non-NULL.
+  Profile* profile() const;
+
+  // Calling this causes all following events sent from the
+  // TabContents object to be ignored.  It also makes all following
+  // calls to profile() return NULL.
+  void Detach();
+
+  // TabContentsDelegate declarations.  Subclasses of this still need to
+  // override:
+  //   virtual void MoveContents(TabContents* source, const gfx::Rect& pos);
+  //   virtual void ToolbarSizeChanged(TabContents* source, bool is_animating);
+
+  virtual void OpenURLFromTab(TabContents* source,
+                              const GURL& url, const GURL& referrer,
+                              WindowOpenDisposition disposition,
+                              PageTransition::Type transition);
+  virtual void NavigationStateChanged(const TabContents* source,
+                                      unsigned changed_flags);
+  virtual void AddNewContents(TabContents* source,
+                              TabContents* new_contents,
+                              WindowOpenDisposition disposition,
+                              const gfx::Rect& initial_pos,
+                              bool user_gesture);
+  virtual void ActivateContents(TabContents* contents);
+  virtual void DeactivateContents(TabContents* contents);
+  virtual void LoadingStateChanged(TabContents* source);
+  virtual void CloseContents(TabContents* source);
+  virtual bool IsPopup(const TabContents* source) const;
+  virtual void UpdateTargetURL(TabContents* source, const GURL& url);
+  virtual bool ShouldAddNavigationToHistory(
+      const history::HistoryAddPageArgs& add_page_args,
+      NavigationType::Type navigation_type);
+
+ private:
+  Profile* profile_;  // Weak pointer.  Always an original profile.
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_HTML_DIALOG_TAB_CONTENTS_DELEGATE_H_