Split the existing GoogleURLTrackerInfoBarDelegate into two classes

chrome/browser/google/google_url_tracker_map_entry.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/google/google_url_tracker_map_entry.h"
+
+#include "chrome/browser/google/google_url_tracker.h"
+#include "chrome/browser/google/google_url_tracker_infobar_delegate.h"
+#include "chrome/browser/infobars/infobar.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "content/public/browser/notification_details.h"
+
+
+GoogleURLTrackerMapEntry::GoogleURLTrackerMapEntry(
+    GoogleURLTracker* google_url_tracker,
+    InfoBarTabHelper* infobar_helper,
+    const content::NotificationSource& navigation_controller_source,
+    const content::NotificationSource& web_contents_source)
+    : google_url_tracker_(google_url_tracker),
+      infobar_helper_(infobar_helper),
+      infobar_(NULL),
+      navigation_controller_source_(navigation_controller_source),
+      web_contents_source_(web_contents_source) {
+}
+
+GoogleURLTrackerMapEntry::~GoogleURLTrackerMapEntry() {
+}
+
+void GoogleURLTrackerMapEntry::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  DCHECK_EQ(chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED, type);
+  DCHECK_EQ(infobar_helper_, content::Source<InfoBarTabHelper>(source).ptr());
+  if (content::Details<InfoBarRemovedDetails>(details)->first == infobar_) {
+    google_url_tracker_->DeleteMapEntryForHelper(infobar_helper_);
+    // WARNING: At this point |this| has been deleted!
+  }
+}
+
+void GoogleURLTrackerMapEntry::SetInfoBar(
+    GoogleURLTrackerInfoBarDelegate* infobar) {
+  DCHECK(!infobar_);
+  infobar_ = infobar;
+  registrar_.Add(this, chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
+                 content::Source<InfoBarTabHelper>(infobar_helper_));
+}
+
+void GoogleURLTrackerMapEntry::Close(bool redo_search) {
+  if (infobar_)
+    infobar_->Close(redo_search);
+  else
+    google_url_tracker_->DeleteMapEntryForHelper(infobar_helper_);
+  // WARNING: At this point |this| has been deleted!
+}