Allow direct and indirect navigation values to be varied via field trial.

chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.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.banners;
 
 import android.app.Activity;
 import android.app.Instrumentation.ActivityMonitor;
 import android.app.Instrumentation.ActivityResult;
 import android.content.Intent;
@@ skipping 138 matching lines @@
             @Override
             public void run() {
                 AppBannerManager.setAppDetailsDelegate(mDetailsDelegate);
             }
         });
 
         AppBannerManager.disableSecureSchemeCheckForTesting();
 
         // Navigations in this test are all of type ui::PAGE_TRANSITION_LINK, i.e. indirect.
         // Force indirect navigations to be worth the same as direct for testing.
-        AppBannerManager.forceEngagementWeightsForTesting(1, 1);
+        AppBannerManager.setEngagementWeights(1, 1);
     }
 
     private boolean waitUntilNoInfoBarsExist() throws Exception {
         return CriteriaHelper.pollForUIThreadCriteria(new Criteria() {
             @Override
             public boolean isSatisfied() {
                 InfoBarContainer container = getActivity().getActivityTab().getInfoBarContainer();
                 return container.getInfoBars().size() == 0;
             }
         });
@@ skipping 272 matching lines @@
             @Override
             public boolean isSatisfied() {
                 AppBannerManager manager =
                         getActivity().getActivityTab().getAppBannerManagerForTesting();
                 return !manager.isFetcherActiveForTesting();
             }
         }));
         assertTrue(waitUntilAppBannerInfoBarAppears(WEB_APP_TITLE));
     }
 }