Plumbing for login apps device policy to extensions.

chrome/browser/extensions/chrome_process_manager_delegate.cc

Index: chrome/browser/extensions/chrome_process_manager_delegate.cc
diff --git a/chrome/browser/extensions/chrome_process_manager_delegate.cc b/chrome/browser/extensions/chrome_process_manager_delegate.cc
index e5804aab7c89b436ade61cc18225ba081b7f3229..928f900997e9db50da020b0ce8c46ed8b4c2e969 100644
--- a/chrome/browser/extensions/chrome_process_manager_delegate.cc
+++ b/chrome/browser/extensions/chrome_process_manager_delegate.cc
@@ -9,6 +9,7 @@
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/extension_management.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
@@ -21,6 +22,10 @@
 #include "extensions/browser/process_manager_factory.h"
 #include "extensions/common/one_shot_event.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/profiles/profile_helper.h"
+#endif
+
 namespace extensions {
 
 ChromeProcessManagerDelegate::ChromeProcessManagerDelegate() {
@@ -44,16 +49,34 @@ bool ChromeProcessManagerDelegate::IsBackgroundPageAllowed(
 
   bool is_normal_session = !profile->IsGuestSession() &&
                            !profile->IsSystemProfile();
+  bool allow_for_signin_profile = false;
+
 #if defined(OS_CHROMEOS)
-  is_normal_session = is_normal_session &&
-                      user_manager::UserManager::Get()->IsUserLoggedIn();
+  const bool is_signin_profile =
+      chromeos::ProfileHelper::IsSigninProfile(profile);
+
+  if (is_signin_profile) {
+    const bool signin_apps_enabled =
+        base::CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kEnableSigninApps);
+    const bool signin_apps_installed =
+        !ExtensionManagementFactory::GetForBrowserContext(context)
+             ->GetForceInstallList()
+             ->empty();
+    allow_for_signin_profile = signin_apps_enabled && signin_apps_installed;
+  } else {
+    const bool user_logged_in =
+        user_manager::UserManager::Get()->IsUserLoggedIn();
+    is_normal_session &= user_logged_in;
+  }
 #endif
 
   // Disallow if the current session is a Guest mode session or login screen but
   // the current browser context is *not* off-the-record. Such context is
   // artificial and background page shouldn't be created in it.
   // http://crbug.com/329498
-  return is_normal_session || profile->IsOffTheRecord();
+  return is_normal_session || profile->IsOffTheRecord() ||
+         allow_for_signin_profile;
 }
 
 bool ChromeProcessManagerDelegate::DeferCreatingStartupBackgroundHosts(