Install and launch kiosk app from cached crx file at start up.

chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc b/chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc
index bad7834f903a53a7ec43b85e8d62afdc21d3e0de..b056094de46327aa46fe68268a5f87719371cfde 100644
--- a/chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc
@@ -484,8 +484,7 @@ IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, UpdateAppDataFromProfile) {
   EXPECT_EQ("Updated App1 Name", apps[0].name);
 }
 
-// Test is flaky. See http://crbug.com/379769 for details.
-IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, DISABLED_BadApp) {
+IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, BadApp) {
   AppDataLoadWaiter waiter(manager(), 2);
   manager()->AddApp("unknown_app");
   TestKioskAppManagerObserver observer(manager());
@@ -493,7 +492,7 @@ IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, DISABLED_BadApp) {
   EXPECT_FALSE(waiter.loaded());
 
   EXPECT_EQ("", GetAppIds());
-  EXPECT_EQ(1, observer.load_failure_count());
+  EXPECT_LE(1, observer.load_failure_count());
 }
 
 IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, GoodApp) {