Fix the System Profile with extensions.

chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc

Index: chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
index 0e6b955ca7a33a7ad24c4ca7b359b655f1ffe04c..c107eecf9e7af4f662aa02de27e712065ccdd97b 100644
--- a/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
+++ b/chrome/browser/ui/ash/launcher/chrome_launcher_controller.cc
@@ -375,8 +375,8 @@ ChromeLauncherController::ChromeLauncherController(Profile* profile,
     // record profile, unless in guest session (where off the record profile is
     // the right one).
     Profile* active_profile = ProfileManager::GetActiveUserProfile();
-    profile_ = active_profile->IsGuestSession() ? active_profile :
-        active_profile->GetOriginalProfile();
+    if (!active_profile->IsGuestSession() && !active_profile->IsSystemProfile())

[msw, 2015/05/21 17:48:12]

Careful, this no longer sets |profile_|! Take another look at my comment.

[Mike Lerman, 2015/05/21 19:24:33]

Doh! Done.

+      active_profile = active_profile->GetOriginalProfile();
 
     app_sync_ui_state_ = AppSyncUIState::Get(profile_);
     if (app_sync_ui_state_)
@@ -2052,7 +2052,8 @@ bool ChromeLauncherController::IsIncognito(
     const content::WebContents* web_contents) const {
   const Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
-  return profile->IsOffTheRecord() && !profile->IsGuestSession();
+  return profile->IsOffTheRecord() && !profile->IsGuestSession() &&
+         !profile->IsSystemProfile();
 }
 
 void ChromeLauncherController::CloseWindowedAppsFromRemovedExtension(