HostZoomLevels     73 content/browser/host_zoom_map_impl.h   typedef std::map<std::string, double> HostZoomLevels;
HostZoomLevels    369 content/renderer/render_frame_impl.h   typedef std::map<GURL, double> HostZoomLevels;
HostZoomLevels    788 content/renderer/render_view_impl.h   typedef std::map<GURL, double> HostZoomLevels;