Remove NOTIFICATION_EXTENSION_ENABLED.

chrome/browser/apps/app_browsertest.cc

Index: chrome/browser/apps/app_browsertest.cc
diff --git a/chrome/browser/apps/app_browsertest.cc b/chrome/browser/apps/app_browsertest.cc
index 0f924731a094736e00f4c3cff2e8a66d2da11fe8..78cf7ba7ee9dd7d0674e9bc4793c3233fffa3b98 100644
--- a/chrome/browser/apps/app_browsertest.cc
+++ b/chrome/browser/apps/app_browsertest.cc
@@ -937,13 +937,30 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, ReloadRelaunches) {
   ASSERT_TRUE(extension);
   ASSERT_TRUE(GetFirstAppWindow());
 
-  // Now tell the app to reload itself
+  // Now tell the app to reload itself.
   ExtensionTestMessageListener launched_listener2("Launched", false);
   launched_listener.Reply("reload");
   ASSERT_TRUE(launched_listener2.WaitUntilSatisfied());
   ASSERT_TRUE(GetFirstAppWindow());
 }
 
+// Tests that reloading a component app loads its (lazy) background page.
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
+                       ComponentReloadLoadsLazyBackgroundPage) {
+  ExtensionTestMessageListener launched_listener("Launched", true);
+  const Extension* component_app = LoadExtensionAsComponentWithManifest(
+      test_data_dir_.AppendASCII("platform_apps")
+          .AppendASCII("component_reload"),
+      FILE_PATH_LITERAL("manifest.json"));
+  ASSERT_TRUE(component_app);
+  ASSERT_TRUE(launched_listener.WaitUntilSatisfied());
+
+  // Now tell the app to reload itself.
+  ExtensionTestMessageListener launched_listener2("Launched", false);
+  launched_listener.Reply("reload");
+  ASSERT_TRUE(launched_listener2.WaitUntilSatisfied());
+}
+
 namespace {
 
 // Utility class to ensure extension installation does or does not occur in