Add method for identifying different InfoBars

chrome/browser/plugins/plugin_infobar_delegates.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_PLUGINS_PLUGIN_INFOBAR_DELEGATES_H_
 #define CHROME_BROWSER_PLUGINS_PLUGIN_INFOBAR_DELEGATES_H_
 
 #include "base/callback.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "url/gurl.h"
@@ skipping 28 matching lines @@
                       scoped_ptr<PluginMetadata> plugin_metadata,
                       const base::string16& message);
 
  private:
   OutdatedPluginInfoBarDelegate(PluginInstaller* installer,
                                 scoped_ptr<PluginMetadata> metadata,
                                 const base::string16& message);
   ~OutdatedPluginInfoBarDelegate() override;
 
   // ConfirmInfoBarDelegate:
+  std::string GetIdentifier() const override;
   void InfoBarDismissed() override;
   int GetIconId() const override;
   base::string16 GetMessageText() const override;
   base::string16 GetButtonLabel(InfoBarButton button) const override;
   bool Accept() override;
   bool Cancel() override;
   base::string16 GetLinkText() const override;
   GURL GetLinkURL() const override;
 
   // PluginInstallerObserver:
@@ skipping 34 matching lines @@
   // |infobar_service|.
   static void Create(InfoBarService* infobar_service,
                      Mode mode,
                      const base::string16& name);
 
  private:
   PluginMetroModeInfoBarDelegate(Mode mode, const base::string16& name);
   ~PluginMetroModeInfoBarDelegate() override;
 
   // ConfirmInfoBarDelegate:
+  std::string GetIdentifier() const override;
   int GetIconId() const override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   base::string16 GetButtonLabel(InfoBarButton button) const override;
   bool Accept() override;
   base::string16 GetLinkText() const override;
   GURL GetLinkURL() const override;
 
   const Mode mode_;
   const base::string16 name_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginMetroModeInfoBarDelegate);
 };
 #endif  // defined(OS_WIN)
 
 #endif  // CHROME_BROWSER_PLUGINS_PLUGIN_INFOBAR_DELEGATES_H_