Implement "appinstalled" event on Android.

chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java
index 8c04ebb87fcb7afba65a75fc4b86a598662da12f..c93362bebe3671e1cea4ec720e9a9a7b23f74d70 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java
@@ -30,9 +30,11 @@ import org.chromium.chrome.browser.infobar.AppBannerInfoBarDelegateAndroid;
 import org.chromium.chrome.browser.infobar.InfoBar;
 import org.chromium.chrome.browser.infobar.InfoBarContainer;
 import org.chromium.chrome.browser.infobar.InfoBarContainer.InfoBarAnimationListener;
+import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.webapps.WebappDataStorage;
 import org.chromium.chrome.test.ChromeTabbedActivityTestBase;
 import org.chromium.chrome.test.util.browser.TabLoadObserver;
+import org.chromium.chrome.test.util.browser.TabTitleObserver;
 import org.chromium.chrome.test.util.browser.WebappTestPage;
 import org.chromium.content.browser.test.util.Criteria;
 import org.chromium.content.browser.test.util.CriteriaHelper;
@@ -497,6 +499,17 @@ public class AppBannerManagerTest extends ChromeTabbedActivityTestBase {
     @SmallTest
     @Feature({"AppBanners"})
     @RetryOnFailure
+    public void testAppInstalledEvent() throws Exception {
+        triggerWebAppBanner(mWebAppUrl, WEB_APP_TITLE, true);
+
+        // The appinstalled event should fire (and cause the title to change).
+        Tab tab = getActivity().getActivityTab();
+        new TabTitleObserver(tab, "Got appinstalled").waitForTitleUpdate(3);
+    }
+
+    @SmallTest
+    @Feature({"AppBanners"})
+    @RetryOnFailure

[dominickn, 2016/12/12 05:03:30]

Nit: remove RetryOnFailure (I have a CL up that removes it from this test
entirely). I believe adding this on new tests is now discouraged.

[Matt Giuca, 2016/12/14 03:39:40]

Done.

     public void testWebAppSplashscreenIsDownloaded() throws Exception {
         // Sets the overriden factory to observer splash screen update.
         final TestDataStorageFactory dataStorageFactory = new TestDataStorageFactory();