[Android WebAPKs] Don't navigate WebAPK when launching it from launcher

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
index cc62a08806a3cfee017307774a8c9c355f2b039f..18a55aab7024be1f64550f2a1e1a43c21450a94b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java
@@ -108,6 +108,9 @@ public class WebappActivity extends FullScreenActivity {
             mWebappInfo = newWebappInfo;
             resetSavedInstanceState();
             if (mIsInitialized) initializeUI(null);
+        } else if (newWebappInfo.shouldForceNavigation() && mIsInitialized) {
+            getActivityTab().loadUrl(new LoadUrlParams(
+                    newWebappInfo.uri().toString(), PageTransition.AUTO_TOPLEVEL));
         }
     }
 
@@ -119,7 +122,7 @@ public class WebappActivity extends FullScreenActivity {
         return (intent == null) ? WebappInfo.createEmpty() : WebappInfo.create(intent);
     }
 
-    private void initializeUI(Bundle savedInstanceState) {
+    protected void initializeUI(Bundle savedInstanceState) {
         // We do not load URL when restoring from saved instance states.
         if (savedInstanceState == null && mWebappInfo.isInitialized()) {
             if (TextUtils.isEmpty(getActivityTab().getUrl())) {