WebAPKs: Open links which are outside of WebAPK scope in Chrome not in WebAPK

chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.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.externalnav;
 
 import android.content.Intent;
 import android.content.pm.ResolveInfo;
 
 import org.chromium.chrome.browser.externalnav.ExternalNavigationHandler.OverrideUrlLoadingResult;
@@ skipping 17 matching lines @@
      */
     boolean willChromeHandleIntent(Intent intent);
 
     /**
      * Search for intent handlers that are specific to this URL aka, specialized apps like
      * google maps or youtube
      */
     boolean isSpecializedHandlerAvailable(List<ResolveInfo> intent);
 
     /**
-     * Get the name of the package of the currently running activity so that incoming intents
-     * can be identified as originating from this activity.
+     * @return Package name of the browser associated with the currently running activity.

[Xi Han, 2016/05/30 20:16:07]

@return -> Returns?

      */
-    String getPackageName();
+    String getBrowserPackageName();
+
+    /**
+     * @return Package name of the WebAPK associated with the currently running activity. Null if

[Xi Han, 2016/05/30 20:16:07]

@return -> Returns?

+     * there is no associated WebAPK.
+     */
+    String getWebApkPackageName();
 
     /**
      * Start an activity for the intent. Used for intents that must be handled externally.
      */
     void startActivity(Intent intent);
 
     /**
      * Start an activity for the intent. Used for intents that may be handled internally or
      * externally. If the user chooses to handle the intent internally, this routine must return
      * false.
@@ skipping 45 matching lines @@
      * Determine if the Chrome app is in the foreground.
      */
     boolean isChromeAppInForeground();
 
     /**
      * Check if Chrome is running in document mode.
      */
     boolean isDocumentMode();
 
     /**
+     * Launches the url in a new Chrome tab. This is useful if the page is being shown in a WebAPK.
+     * @param url The URL that Chrome should navigate to.
+     */
+    public void startChromeActivity(String url);
+
+    /**
      * @return Default SMS application's package name. Null if there isn't any.
      */
     String getDefaultSmsPackageName();
 }