Run the later parts of startup as UI thread tasks

android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java

 // Copyright (c) 2012 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.android_webview;
 
 import android.content.Context;
-import android.content.SharedPreferences;
 
 import org.chromium.base.PathUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.content.app.LibraryLoader;
 import org.chromium.content.browser.AndroidBrowserProcess;
 import org.chromium.content.common.ProcessInitException;
 
 /**
  * Wrapper for the steps needed to initialize the java and native sides of webview chromium.
  */
@@ skipping 23 matching lines @@
     public static void start(final Context context) {
         // We must post to the UI thread to cover the case that the user
         // has invoked Chromium startup by using the (thread-safe)
         // CookieManager rather than creating a WebView.
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {
                 try {
                     LibraryLoader.ensureInitialized();
                     AndroidBrowserProcess.init(context,
-                            AndroidBrowserProcess.MAX_RENDERERS_SINGLE_PROCESS);
+                            AndroidBrowserProcess.MAX_RENDERERS_SINGLE_PROCESS,
+                            true, null);
                 } catch (ProcessInitException e) {
                     throw new RuntimeException("Cannot initialize WebView", e);
                 }
             }
         });
     }
 }