Re-factor location bar/toolbar code to get rid of the browser dependency.

chrome/browser/ui/toolbar/toolbar_model.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 CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 
-class Browser;
+class ToolbarModelDelegate;
 
 namespace content {
 class NavigationController;
 }
 
 namespace net {
 class X509Certificate;
 }
 
 // This class is the model used by the toolbar, location bar and autocomplete
 // edit.  It populates its states from the current navigation entry retrieved
 // from the navigation controller returned by GetNavigationController().
 class ToolbarModel {
  public:
   // TODO(wtc): unify ToolbarModel::SecurityLevel with SecurityStyle.  We
   // don't need two sets of security UI levels.  SECURITY_STYLE_AUTHENTICATED
   // needs to be refined into three levels: warning, standard, and EV.
   enum SecurityLevel {
     NONE = 0,          // HTTP/no URL/user is editing
     EV_SECURE,         // HTTPS with valid EV cert
     SECURE,            // HTTPS (non-EV)
     SECURITY_WARNING,  // HTTPS, but unable to check certificate revocation
                        // status or with insecure content on the page
     SECURITY_ERROR,    // Attempted HTTPS and failed, page not authenticated
     NUM_SECURITY_LEVELS,
   };
 
-  explicit ToolbarModel(Browser* browser);
+  explicit ToolbarModel(ToolbarModelDelegate* delegate);
   ~ToolbarModel();
 
   // Returns the text that should be displayed in the location bar.
   string16 GetText() const;
 
   // Returns the security level that the toolbar should display.
   SecurityLevel GetSecurityLevel() const;
 
   // Returns the resource_id of the icon to show to the left of the address,
   // based on the current URL.  This doesn't cover specialized icons while the
@@ skipping 15 matching lines @@
 
   // Returns "<organization_name> [<country>]".
   static string16 GetEVCertName(const net::X509Certificate& cert);
 
  private:
   // Returns the navigation controller used to retrieve the navigation entry
   // from which the states are retrieved.
   // If this returns NULL, default values are used.
   content::NavigationController* GetNavigationController() const;
 
-  Browser* browser_;
+  ToolbarModelDelegate* delegate_;
 
   // Whether the text in the location bar is currently being edited.
   bool input_in_progress_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ToolbarModel);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_MODEL_H_