Add method for identifying different InfoBars

chrome/browser/android/banners/app_banner_infobar_delegate_android.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_ANDROID_BANNERS_APP_BANNER_INFOBAR_DELEGATE_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_INFOBAR_DELEGATE_ANDROID_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/android/banners/app_banner_data_fetcher_android.h"
@@ skipping 50 matching lines @@
   void OnInstallFinished(JNIEnv* env,
                          const base::android::JavaParamRef<jobject>& obj,
                          jboolean success);
 
  private:
   void CreateJavaDelegate();
   void SendBannerAccepted(content::WebContents* web_contents,
                           const std::string& platform);
 
   // ConfirmInfoBarDelegate:
+  std::string GetIdentifier() const override;
   gfx::Image GetIcon() const override;
   void InfoBarDismissed() override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   bool Accept() override;
   bool LinkClicked(WindowOpenDisposition disposition) override;
 
   base::android::ScopedJavaGlobalRef<jobject> java_delegate_;
 
   // Used to fetch the splash screen icon for webapps.
@@ skipping 12 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerInfoBarDelegateAndroid);
 };  // AppBannerInfoBarDelegateAndroid
 
 // Register native methods.
 bool RegisterAppBannerInfoBarDelegateAndroid(JNIEnv* env);
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_INFOBAR_DELEGATE_ANDROID_H_