Componentize sad_tab

components/sad_tab/sad_tab_helper.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 CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
-#define CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
+#ifndef COMPONENTS_SAD_TAB_SAD_TAB_HELPER_H_
+#define COMPONENTS_SAD_TAB_SAD_TAB_HELPER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
-namespace chrome {
+namespace sad_tab {
+
 class SadTab;
-}
+class SadTabClient;
 
 // Per-tab class to manage sad tab views.
 class SadTabHelper : public content::WebContentsObserver,
                      public content::WebContentsUserData<SadTabHelper> {
  public:
+  static void CreateForWebContentsWithClient(
+      content::WebContents* contents,
+      scoped_ptr<SadTabClient> client);
+
   virtual ~SadTabHelper();
 
-  chrome::SadTab* sad_tab() { return sad_tab_.get(); }
+  SadTab* sad_tab() { return sad_tab_.get(); }
 
  private:
   friend class content::WebContentsUserData<SadTabHelper>;
 
-  explicit SadTabHelper(content::WebContents* web_contents);
+  SadTabHelper(content::WebContents* web_contents,
+               scoped_ptr<SadTabClient> client);
 
   void InstallSadTab(base::TerminationStatus status);
 
   // Overridden from content::WebContentsObserver:
   virtual void RenderViewReady() OVERRIDE;
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
 
-  scoped_ptr<chrome::SadTab> sad_tab_;
+  scoped_ptr<SadTabClient> client_;
+  scoped_ptr<SadTab> sad_tab_;
 
   DISALLOW_COPY_AND_ASSIGN(SadTabHelper);
 };
 
-#endif  // CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
+}  // namespace sad_tab
+
+#endif  // COMPONENTS_SAD_TAB_SAD_TAB_HELPER_H_