Componentize FaviconTabHelper

components/favicon/core/favicon_driver.cc

+// Copyright 2015 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 "components/favicon/core/favicon_driver.h"
+
+#include "components/favicon/core/favicon_driver_observer.h"
+
+namespace favicon {
+
+void FaviconDriver::AddObserver(FaviconDriverObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void FaviconDriver::RemoveObserver(FaviconDriverObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+FaviconDriver::FaviconDriver() {
+}
+
+FaviconDriver::~FaviconDriver() {
+}
+
+void FaviconDriver::NotifyFaviconAvailable(const gfx::Image& image) {
+  FOR_EACH_OBSERVER(FaviconDriverObserver, observer_list_,
+                    OnFaviconAvailable(image));
+}
+
+void FaviconDriver::NotifyFaviconUpdated(bool icon_url_changed) {
+  FOR_EACH_OBSERVER(FaviconDriverObserver, observer_list_,
+                    OnFaviconUpdated(this, icon_url_changed));
+}
+
+}  // namespace favicon