Fix WebAPK crashes on launch on Jellybean.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
index e33a84d54f607e96c705c6c0fd422d6c8086b634..b7f443620f7025b5c0b2e5883c9b9a05f2b74187 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
@@ -51,7 +51,7 @@ public class WebApkActivity extends WebappActivity {
         // Register the WebAPK. It is possible that a WebAPK's meta data was deleted when user
         // cleared Chrome's data. When it is launched again, we know that the WebAPK is still
         // installed, so re-register it.
-        WebappRegistry.registerWebapp(WebApkActivity.this, getId(),
+        WebappRegistry.registerWebapp(WebApkActivity.this, mWebappInfo.id(),
                 new WebappRegistry.FetchWebappDataStorageCallback() {
                     @Override
                     public void onWebappDataStorageRetrieved(WebappDataStorage storage) {