Zoom Extension API (content changes)

content/browser/host_zoom_map_impl.h

Index: content/browser/host_zoom_map_impl.h
diff --git a/content/browser/host_zoom_map_impl.h b/content/browser/host_zoom_map_impl.h
index 0ad4fec46bf74ec0482d3b283488c0b0c265028b..2755fbc1751923b80e1ace2621b4a1dae353b61a 100644
--- a/content/browser/host_zoom_map_impl.h
+++ b/content/browser/host_zoom_map_impl.h
@@ -35,6 +35,8 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
   virtual double GetZoomLevelForHostAndScheme(
       const std::string& scheme,
       const std::string& host) const OVERRIDE;
+  virtual bool HasZoomLevelInMap(const std::string& scheme,
+                                 const std::string& host) const OVERRIDE;
   virtual ZoomLevelVector GetAllZoomLevels() const OVERRIDE;
   virtual void SetZoomLevelForHost(
       const std::string& host,
@@ -43,6 +45,13 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
       const std::string& scheme,
       const std::string& host,
       double level) OVERRIDE;
+  virtual void SetTemporaryZoomLevel(int render_process_id,
+                                     int render_view_id,
+                                     const std::string& host,
+                                     double level,
+                                     bool send_level_to_view) OVERRIDE;
+  virtual void EraseTemporaryZoomLevel(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(
@@ -85,14 +94,6 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
   double GetTemporaryZoomLevel(int render_process_id,
                                int render_view_id) const;
 
-  // Sets the temporary zoom level that's only valid for the lifetime of this
-  // WebContents.
-  //
-  // This should only be called on the UI thread.
-  void SetTemporaryZoomLevel(int render_process_id,
-                             int render_view_id,
-                             double level);
-
   // NotificationObserver implementation.
   virtual void Observe(int type,
                        const NotificationSource& source,
@@ -116,6 +117,17 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
 
   double GetZoomLevelForHost(const std::string& host) const;
 
+  // Notify a particular render view to change its zoom level.
+  void SendZoomLevelChange(int render_process_id,
+                           int render_view_id,
+                           double level);
+
+  // Notifies the renderers from this browser context to change the zoom level
+  // for the specified host and scheme.
+  void SendZoomLevelChange(const std::string& scheme,
+                           const std::string& host,
+                           double level);
+
   // Callbacks called when zoom level changes.
   base::CallbackList<void(const ZoomLevelChange&)>
       zoom_level_changed_callbacks_;