Update the EphemeralAppLauncher for use by the webstorePrivate API

chrome/browser/ui/app_list/search/webstore/webstore_result.h

Index: chrome/browser/ui/app_list/search/webstore/webstore_result.h
diff --git a/chrome/browser/ui/app_list/search/webstore/webstore_result.h b/chrome/browser/ui/app_list/search/webstore/webstore_result.h
index 9160f0f7de048e2dd0786e78bdee7b1e062f110b..44f37d978cc4618136b2e9f8c4659726c8c7d387 100644
--- a/chrome/browser/ui/app_list/search/webstore/webstore_result.h
+++ b/chrome/browser/ui/app_list/search/webstore/webstore_result.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
+#include "chrome/browser/apps/ephemeral_app_launcher.h"
 #include "chrome/browser/extensions/install_observer.h"
 #include "chrome/browser/ui/app_list/search/chrome_search_result.h"
 #include "extensions/browser/extension_registry_observer.h"
@@ -48,6 +49,8 @@ class WebstoreResult : public ChromeSearchResult,
 
   void StartInstall(bool launch_ephemeral_app);
   void InstallCallback(bool success, const std::string& error);
+  void LaunchCallback(EphemeralAppLauncher::LaunchResult result,
+                      const std::string& error);
 
   // Start observing both InstallObserver and ExtensionRegistryObserver.
   void StartObserving();