Implement "appinstalled" event on Android.

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/webapps/AddToHomescreenManagerTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/AddToHomescreenManagerTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/AddToHomescreenManagerTest.java
index 01aa9621c5c441e54fa60394f037f0b11e232418..c08d31d659cb7b95d98f788998ea1df4bbd64155 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/AddToHomescreenManagerTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/webapps/AddToHomescreenManagerTest.java
@@ -24,6 +24,7 @@ import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel;
 import org.chromium.chrome.test.ChromeActivityTestCaseBase;
 import org.chromium.chrome.test.util.browser.TabLoadObserver;
+import org.chromium.chrome.test.util.browser.TabTitleObserver;
 import org.chromium.content.browser.test.util.Criteria;
 import org.chromium.content.browser.test.util.CriteriaHelper;
 import org.chromium.content.common.ContentSwitches;
@@ -77,6 +78,10 @@ public class AddToHomescreenManagerTest extends ChromeActivityTestCaseBase<Chrom
                     + "<link rel=\"manifest\" href=\"../../../../slow?10000\" />"
                     + "</head></html>");
 
+    private static final String EVENT_WEBAPP_PATH =
+            "/chrome/test/data/banners/appinstalled_test_page.html";
+    private static final String EVENT_WEBAPP_TITLE = "appinstalled event test page";
+
     private static class TestShortcutHelperDelegate extends ShortcutHelper.Delegate {
         public Intent mBroadcastedIntent;
 
@@ -287,6 +292,24 @@ public class AddToHomescreenManagerTest extends ChromeActivityTestCaseBase<Chrom
         }
     }
 
+    /** Tests that the appinstalled event is fired when an app is installed.
+     */
+    @SmallTest
+    @Feature("{Webapp}")
+    public void testAddWebappShortcutAppInstalledEvent() throws Exception {
+        try {
+            loadUrl(mTestServer.getURL(EVENT_WEBAPP_PATH), EVENT_WEBAPP_TITLE);
+            addShortcutToTab(mTab, "");
+
+            // Wait for the tab title to change. This will happen (due to the JavaScript that runs
+            // in the page) once the appinstalled event has been fired twice: once to test
+            // addEventListener('appinstalled'), once to test onappinstalled attribute.
+            new TabTitleObserver(mTab, "Got appinstalled 2 times").waitForTitleUpdate(3);
+        } finally {
+            mTestServer.stopAndDestroyServer();
+        }
+    }
+
     private void loadUrl(String url, String expectedPageTitle) throws Exception {
         new TabLoadObserver(mTab, expectedPageTitle, null).fullyLoadUrl(url);
     }