Fix crash when reloading packaged app.

chrome/browser/extensions/platform_app_browsertest.cc

Index: chrome/browser/extensions/platform_app_browsertest.cc
diff --git a/chrome/browser/extensions/platform_app_browsertest.cc b/chrome/browser/extensions/platform_app_browsertest.cc
index 55cf56d3876b34f725096aa9a665c7d430d7e9f8..7d13d5e36958cabe4b38cc654c4daecb0dd36021 100644
--- a/chrome/browser/extensions/platform_app_browsertest.cc
+++ b/chrome/browser/extensions/platform_app_browsertest.cc
@@ -34,6 +34,7 @@
 #include "chrome/browser/ui/extensions/native_app_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/test_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ -1083,5 +1084,22 @@ IN_PROC_BROWSER_TEST_F(PlatformAppIncognitoBrowserTest, IncognitoComponentApp) {
 
 #endif  // defined(OS_CHROMEOS)
 
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, DontCrashWhenReloading) {
+  // Regression test for http://crbug.com/174250
+  browser()->profile()->GetPrefs()->SetBoolean(
+      prefs::kExtensionsUIDeveloperMode, true);
+  ui_test_utils::NavigateToURL(browser(), GURL("chrome://extensions"));
+  ExtensionTestMessageListener launched_listener("Launched", true);
+  const Extension* extension = LoadAndLaunchPlatformApp("reload");
+  ASSERT_TRUE(extension);
+  ASSERT_TRUE(launched_listener.WaitUntilSatisfied());
+  ASSERT_TRUE(GetFirstShellWindow());
+
+  // Now tell the app to reload itself.
+  ExtensionTestMessageListener launched_listener2("Launched", false);
+  launched_listener.Reply("reload");
+  ASSERT_TRUE(launched_listener2.WaitUntilSatisfied());
+  ASSERT_TRUE(GetFirstShellWindow());
+}
 
 }  // namespace extensions