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

chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java b/chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java
index b6fa211a2a05022efd039efa26b381a6f5aef463..31e4aa42a3b16a93691970bc68f3e33f52e24399 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/banners/AppBannerManager.java
@@ -157,9 +157,8 @@ public class AppBannerManager extends EmptyTabObserver {
 
     /** Sets the weights of direct and indirect page navigations for testing. */
     @VisibleForTesting
-    static void forceEngagementWeightsForTesting(double directEngagement,
-            double indirectEngagement) {
-        nativeForceEngagementWeightsForTesting(directEngagement, indirectEngagement);
+    static void setEngagementWeights(double directEngagement, double indirectEngagement) {
+        nativeSetEngagementWeights(directEngagement, indirectEngagement);
     }
 
     /** Returns whether a AppBannerDataFetcher is actively retrieving data. */
@@ -179,7 +178,7 @@ public class AppBannerManager extends EmptyTabObserver {
     // Testing methods.
     private static native void nativeSetTimeDeltaForTesting(int days);
     private static native void nativeDisableSecureSchemeCheckForTesting();
-    private static native void nativeForceEngagementWeightsForTesting(
-            double directEngagement, double indirectEngagement);
+    private static native void nativeSetEngagementWeights(double directEngagement,
+            double indirectEngagement);
     private native boolean nativeIsFetcherActive(long nativeAppBannerManagerAndroid);
 }