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

Index: chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
index ad6395bbaba1de81acf4d2c0ecebbd9afc22e325..0909efe8cd3f9c2a00e399c7ed9f523ab79a94e2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegate.java
@@ -35,10 +35,15 @@ interface ExternalNavigationDelegate {
     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.
@@ -104,6 +109,12 @@ interface ExternalNavigationDelegate {
     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();