Remove NOTIFICATION_SESSION_RESTORE_DONE from src/extensions

src/extensions should not listen for notifications from
src/chrome.

NOTIFICATION_SESSION_RESTORE_DONE is used by state_store.cc
to load per-extension state from a database at startup. 
Refactor this so Chrome explicitly requests the StateStore 
to initialize. Other embedders (like app_shell) don't need 
this behavior.

BUG=392660
TEST=browser_tests *Extension*

Review URL: https://codereview.chromium.org/427003006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@286429 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 34 insertions, 0 deletions

diff --git a/chrome/browser/extensions/state_store_notification_observer.cc b/chrome/browser/extensions/state_store_notification_observer.cc
new file mode 100644
index 0000000..0e5084c
--- /dev/null
+++ b/chrome/browser/extensions/state_store_notification_observer.cc
@@ -0,0 +1,34 @@
+// Copyright 2014 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/state_store_notification_observer.h"
+
+#include "base/logging.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "content/public/browser/notification_service.h"
+#include "extensions/browser/state_store.h"
+
+namespace extensions {
+
+StateStoreNotificationObserver::StateStoreNotificationObserver(
+    StateStore* state_store)
+    : state_store_(state_store) {
+  registrar_.Add(this,
+                 chrome::NOTIFICATION_SESSION_RESTORE_DONE,
+                 content::NotificationService::AllBrowserContextsAndSources());
+}
+
+StateStoreNotificationObserver::~StateStoreNotificationObserver() {
+}
+
+void StateStoreNotificationObserver::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  DCHECK_EQ(type, chrome::NOTIFICATION_SESSION_RESTORE_DONE);
+  registrar_.RemoveAll();
+  state_store_->RequestInitAfterDelay();
+}
+
+}  // namespace extensions