[Android] Simplify "network predictions" preference to a boolean value.

chrome/android/java/src/org/chromium/chrome/browser/precache/PrecacheLauncher.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.precache;
 
 import android.content.Context;
 
 import org.chromium.base.Log;
 import org.chromium.base.ThreadUtils;
@@ skipping 99 matching lines @@
      * UI thread.
      *
      * @param context any context within the application
      */
     private void updateEnabledSync(Context context) {
         // PrefServiceBridge.getInstance() and nativeShouldRun() can only be executed on the UI
         // thread.
         ThreadUtils.assertOnUiThread();
 
         boolean networkPredictionsAllowed =
-                PrefServiceBridge.getInstance().canPredictNetworkActions();
+                PrefServiceBridge.getInstance().canPrefetchAndPrerender();
         boolean shouldRun = nativeShouldRun();
 
         mNetworkPredictionsAllowed = networkPredictionsAllowed;
         mShouldRun = shouldRun;
 
         PrecacheServiceLauncher.setIsPrecachingEnabled(
                 context.getApplicationContext(), networkPredictionsAllowed && shouldRun);
         Log.v(TAG, "updateEnabledSync complete");
     }
 
@@ skipping 58 matching lines @@
         return reasons;
     }
 
     private native long nativeInit();
     private native void nativeDestroy(long nativePrecacheLauncher);
     private native void nativeStart(long nativePrecacheLauncher);
     private native void nativeCancel(long nativePrecacheLauncher);
 
     @VisibleForTesting native boolean nativeShouldRun();
 }