Migrate HostZoomMap to live in StoragePartition.

chrome/browser/ui/zoom/zoom_level_prefs_delegate_impl.h

+// Copyright (c) 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.
+
+#ifndef CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_DELEGATE_IMPL_H_
+#define CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_DELEGATE_IMPL_H_
+
+#include "content/public/browser/zoom_level_prefs_delegate.h"
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/prefs/json_pref_store.h"
+#include "base/prefs/pref_store.h"
+#include "chrome/browser/prefs/pref_service_syncable.h"
+#include "content/public/browser/host_zoom_map.h"
+
+namespace browser {
+
+class ZoomLevelPrefsDelegateImpl : public PrefStore::Observer,

[Fady Samuel, 2014/08/13 19:45:42]

ZoomLevelPrefsStoreImpl

[wjmaclean, 2014/08/14 18:18:21]

Done.

+                                   public content::ZoomLevelPrefsDelegate {
+ public:
+  ZoomLevelPrefsDelegateImpl();
+  virtual ~ZoomLevelPrefsDelegateImpl();
+  void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
+
+  // Implement ZoomLevelPrefsDelegate.
+  virtual void InitZoomLevels(const base::FilePath& file_path,
+                              content::HostZoomMap* host_zoom_map) OVERRIDE;
+  virtual PrefService* GetPrefs() OVERRIDE;
+
+  // Implement PrefObserver.
+  virtual void OnPrefValueChanged(const std::string& key) OVERRIDE;
+  virtual void OnInitializationCompleted(bool succeeded) OVERRIDE;
+
+ private:
+
+  scoped_refptr<JsonPrefStore> zoom_level_prefs_;
+  scoped_ptr<PrefServiceSyncable> pref_service_;
+  scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
+  content::HostZoomMap* host_zoom_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(ZoomLevelPrefsDelegateImpl);
+};
+
+}  // namespace browser
+
+#endif  // CHROME_BROWSER_UI_ZOOM_ZOOM_LEVEL_PREFS_DELEGATE_IMPL_H_