Implementation of newly designed sign in related histograms for Android

chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkSigninActivity.java

 // 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.
 
 package org.chromium.chrome.browser.enhancedbookmarks;
 
 import android.os.Bundle;
 
 import org.chromium.base.ObserverList;
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.browser.firstrun.ProfileDataCache;
 import org.chromium.chrome.browser.ntp.RecentTabsPromoView;
 import org.chromium.chrome.browser.ntp.RecentTabsPromoView.SyncPromoModel;
 import org.chromium.chrome.browser.ntp.RecentTabsPromoView.UserActionListener;
 import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.signin.SigninAccessPoint;
 import org.chromium.chrome.browser.signin.SigninManager;
 import org.chromium.chrome.browser.signin.SigninManager.SignInStateObserver;
 import org.chromium.chrome.browser.sync.ProfileSyncService;
 import org.chromium.sync.AndroidSyncSettings;
 import org.chromium.sync.AndroidSyncSettings.AndroidSyncSettingsObserver;
 import org.chromium.sync.signin.ChromeSigninController;
 
 /**
  * Sign in promotion activity that is triggered from enhanced bookmark UI.
  */
@@ skipping 103 matching lines @@
         RecordUserAction.record("Signin_AddAccountToDevice");
     }
 
     @Override
     public ProfileDataCache getProfileDataCache() {
         if (mProfileDataCache == null) {
             mProfileDataCache = new ProfileDataCache(this, Profile.getLastUsedProfile());
         }
         return mProfileDataCache;
     }
+
+    @Override
+    public int getAccessPoint() {
+        return SigninAccessPoint.BOOKMARK_MANAGER;
+    }
 }