Make AppBannerInfoBar install WebAPK.

chrome/browser/banners/app_banner_settings_helper.h

 // Copyright 2014 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_BANNERS_APP_BANNER_SETTINGS_HELPER_H_
 #define CHROME_BROWSER_BANNERS_APP_BANNER_SETTINGS_HELPER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 32 matching lines @@
   enum AppBannerEvent {
     APP_BANNER_EVENT_COULD_SHOW,
     APP_BANNER_EVENT_DID_SHOW,
     APP_BANNER_EVENT_DID_BLOCK,
     APP_BANNER_EVENT_DID_ADD_TO_HOMESCREEN,
     APP_BANNER_EVENT_NUM_EVENTS,
   };
 
   enum AppBannerRapporMetric {
     WEB,
+    WEBAPK,
     NATIVE,
   };
 
   // BannerEvents record the time that a site was accessed, along with an
   // engagement weight representing the importance of the access.
   struct BannerEvent {
    base::Time time;
    double engagement;
   };
 
@@ skipping 104 matching lines @@
 
   // Returns true if the app banner trigger condition should use the site
   // engagement score instead of the navigation-based heuristic.
   static bool ShouldUseSiteEngagementScore();
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(AppBannerSettingsHelper);
 };
 
 #endif  // CHROME_BROWSER_BANNERS_APP_BANNER_SETTINGS_HELPER_H_