Pull SecurityStateModel out into a component

chrome/browser/ui/toolbar/chrome_toolbar_model.h

 // Copyright 2015 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_CHROME_TOOLBAR_MODEL_H_
 #define CHROME_BROWSER_UI_TOOLBAR_CHROME_TOOLBAR_MODEL_H_
 
 #include "base/macros.h"
-#include "chrome/browser/ssl/security_state_model.h"
+#include "components/security_state/security_state_model.h"
 #include "components/toolbar/toolbar_model.h"
 
 // This class is a //chrome-specific extension of the ToolbarModel interface.
-// TODO(blundell): If SecurityStateModel::SecurityLevel gets componentized,
+// TODO(blundell): Now that SecurityStateModel::SecurityLevel is componentized,
 // GetSecurityLevel() can be folded into ToolbarModel and this class can go
 // away. crbug.com/515071
 class ChromeToolbarModel : public ToolbarModel {
  public:
   ~ChromeToolbarModel() override;
 
   // Returns the security level that the toolbar should display.  If
   // |ignore_editing| is true, the result reflects the underlying state of the
   // page without regard to any user edits that may be in progress in the
   // omnibox.
-  virtual SecurityStateModel::SecurityLevel GetSecurityLevel(
+  virtual security_state::SecurityStateModel::SecurityLevel GetSecurityLevel(
       bool ignore_editing) const = 0;
 
  protected:
   ChromeToolbarModel();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeToolbarModel);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_CHROME_TOOLBAR_MODEL_H_