Convert zoom callbacks to use CallbackRegistry
BUG=268984
TEST=no functional change.
Review URL: https://codereview.chromium.org/23851016
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226409 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/host_zoom_map_impl.h b/content/browser/host_zoom_map_impl.h
index 216c83eb..eab1040 100644
--- a/content/browser/host_zoom_map_impl.h
+++ b/content/browser/host_zoom_map_impl.h
@@ -42,9 +42,7 @@
double level) OVERRIDE;
virtual double GetDefaultZoomLevel() const OVERRIDE;
virtual void SetDefaultZoomLevel(double level) OVERRIDE;
- virtual void AddZoomLevelChangedCallback(
- const ZoomLevelChangedCallback& callback) OVERRIDE;
- virtual void RemoveZoomLevelChangedCallback(
+ virtual scoped_ptr<Subscription> AddZoomLevelChangedCallback(
const ZoomLevelChangedCallback& callback) OVERRIDE;
// Returns the temporary zoom level that's only valid for the lifetime of
@@ -75,7 +73,8 @@
typedef std::map<std::string, HostZoomLevels> SchemeHostZoomLevels;
// Callbacks called when zoom level changes.
- std::vector<ZoomLevelChangedCallback> zoom_level_changed_callbacks_;
+ base::CallbackList<void(const ZoomLevelChange&)>
+ zoom_level_changed_callbacks_;
// Copy of the pref data, so that we can read it on the IO thread.
HostZoomLevels host_zoom_levels_;
