Install default apps if sync is disabled.

chrome/browser/extensions/api/permissions/permissions_api.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/permissions/permissions_api.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/permissions/permissions_api_helpers.h"
 #include "chrome/browser/extensions/extension_management.h"
@@ skipping 190 matching lines @@
     perms_updater.AddPermissions(extension(), requested_permissions_.get());
     results_ = Request::Results::Create(true);
     SendResponse(true);
     return true;
   }
 
   // Filter out the granted permissions so we only prompt for new ones.
   requested_permissions_ = PermissionSet::CreateDifference(
       requested_permissions_.get(), granted.get());
 
+  // Filter out the active permissions.
+  requested_permissions_ = PermissionSet::CreateDifference(
+      requested_permissions_.get(),
+      extension()->permissions_data()->active_permissions().get());
+
   AddRef();  // Balanced in InstallUIProceed() / InstallUIAbort().
 
   // We don't need to show the prompt if there are no new warnings, or if
   // we're skipping the confirmation UI. All extension types but INTERNAL
   // are allowed to silently increase their permission level.
   bool has_no_warnings = PermissionMessageProvider::Get()
                              ->GetWarningMessages(requested_permissions_.get(),
                                                   extension()->GetType())
                              .empty();
   if (auto_confirm_for_tests == PROCEED || has_no_warnings ||
       extension_->location() == Manifest::COMPONENT) {
     InstallUIProceed();
   } else if (auto_confirm_for_tests == ABORT) {
     // Pretend the user clicked cancel.
     InstallUIAbort(true);
   } else {
     CHECK_EQ(DO_NOT_SKIP, auto_confirm_for_tests);
     install_ui_.reset(new ExtensionInstallPrompt(GetAssociatedWebContents()));
     install_ui_->ConfirmPermissions(
         this, extension(), requested_permissions_.get());
   }
 
   return true;
 }
 
 }  // namespace extensions