Migrate HostZoomMap to live in StoragePartition.

content/browser/host_zoom_map_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_
 #define CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/supports_user_data.h"
 #include "base/synchronization/lock.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
+namespace base {
+class DictionaryValue;
+}
+
 namespace content {
 
 class WebContentsImpl;
 
 // HostZoomMap needs to be deleted on the UI thread because it listens
 // to notifications on there (and holds a NotificationRegistrar).
 class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
-                                       public NotificationObserver,
-                                       public base::SupportsUserData::Data {
+                                       public NotificationObserver {
  public:
-  HostZoomMapImpl();
+  explicit HostZoomMapImpl(double default_zoom_level);

[Fady Samuel, 2014/08/15 15:03:01]

Remove this parameter. The default "default zoom level" should always be 1.0.

[wjmaclean, 2014/08/15 22:13:50]

Actually, it should always be 0.0

This was removed anyway in changing default zoom level to be per-partition.

   virtual ~HostZoomMapImpl();
 
   // HostZoomMap implementation:
   virtual void CopyFrom(HostZoomMap* copy) OVERRIDE;
   virtual double GetZoomLevelForHostAndScheme(
       const std::string& scheme,
       const std::string& host) const OVERRIDE;
   // TODO(wjmaclean) Should we use a GURL here? crbug.com/384486
   virtual bool HasZoomLevel(const std::string& scheme,
                             const std::string& host) const OVERRIDE;
@@ skipping 11 matching lines @@
                                      int render_view_id,
                                      double level) OVERRIDE;
 
   virtual void ClearTemporaryZoomLevel(int render_process_id,
                                        int render_view_id) OVERRIDE;
   virtual double GetDefaultZoomLevel() const OVERRIDE;
   virtual void SetDefaultZoomLevel(double level) OVERRIDE;
   virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback(
       const ZoomLevelChangedCallback& callback) OVERRIDE;
 
+  // Returns a dictionary of ZoomLevels. Schemes are stripped away, but
+  // scheme+host zoom levels are included.
+  scoped_ptr<base::DictionaryValue> GetZoomLevelDictionary() const;
+
   // Returns the current zoom level for the specified WebContents. This may
   // be a temporary zoom level, depending on UsesTemporaryZoomLevel().
   double GetZoomLevelForWebContents(
       const WebContentsImpl& web_contents_impl) const;
 
   // Sets the zoom level for this WebContents. If this WebContents is using
   // a temporary zoom level, then level is only applied to this WebContents.
   // Otherwise, the level will be applied on a host level.
   void SetZoomLevelForWebContents(const WebContentsImpl& web_contents_impl,
                                   double level);
@@ skipping 64 matching lines @@
   mutable base::Lock lock_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(HostZoomMapImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_HOST_ZOOM_MAP_IMPL_H_