Changes to content/ to facilitate new zoom extension API

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 155f18e00fb2babd091a352d5df7b2b6974982ce..b941f07b21b5938ff28e297c1e9617a853ab58d4 100644
--- a/content/browser/host_zoom_map_impl.h
+++ b/content/browser/host_zoom_map_impl.h
@@ -54,12 +54,20 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
   double GetTemporaryZoomLevel(int render_process_id,
                                int render_view_id) const;
 
+  // Passes a zoom ID along to the ZoomController.

[Fady Samuel, 2014/04/07 21:27:24]

ZoomController is a chrome concept. Remove reference to it in content.

[paulmeyer, 2014/04/08 21:13:20]

Done.

+  virtual void SetZoomLevelForHost(
+      const std::string& host,
+      int zoom_id,
+      double level);
+
   // 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,
+                             const std::string& host,
+                             int zoom_id,
                              double level);
 
   // NotificationObserver implementation.
@@ -68,8 +76,17 @@ class CONTENT_EXPORT HostZoomMapImpl : public NON_EXPORTED_BASE(HostZoomMap),
                        const NotificationDetails& details) OVERRIDE;
 
  private:
+  // Erases an entry in |temporary_zoom_levels_|.
+  void EraseTemporaryZoomLevel(int render_process_id, int render_view_id);
+
   double GetZoomLevelForHost(const std::string& host) const;
 
+  // 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);
+
   typedef std::map<std::string, double> HostZoomLevels;
   typedef std::map<std::string, HostZoomLevels> SchemeHostZoomLevels;