webapps: add splashscreen for installed webapps

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java
index c8bfaf16e53b5bc571af7951595c7de52b840620..72a04ed5d6bacf35b35fb93d3c516b6c68c4dad2 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappModeTest.java
@@ -107,6 +107,17 @@ public class WebappModeTest extends MultiActivityTestBase {
         ApplicationTestUtils.waitUntilChromeInForeground();
     }
 
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        // Register the webapps so when the data storage is opened, the test doesn't crash. There is
+        // no race condition with the retrival as AsyncTasks are run sequentially on the background
+        // thread.
+        WebappRegistry.registerWebapp(getInstrumentation().getTargetContext(), WEBAPP_1_ID);
+        WebappRegistry.registerWebapp(getInstrumentation().getTargetContext(), WEBAPP_2_ID);
+    }
+
     /**
      * Tests that WebappActivities are started properly.
      */