Propagate pageScaleFactor to GuestViews

components/ui/zoom/page_zoom.cc

 // Copyright 2015 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.
 
 #include "components/ui/zoom/page_zoom.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/prefs/pref_service.h"
@@ skipping 65 matching lines @@
   ui_zoom::ZoomController* zoom_controller =
       ui_zoom::ZoomController::FromWebContents(web_contents);
   if (!zoom_controller)
     return;
 
   double current_zoom_level = zoom_controller->GetZoomLevel();
   double default_zoom_level = zoom_controller->GetDefaultZoomLevel();
 
   if (zoom == content::PAGE_ZOOM_RESET) {
     zoom_controller->SetZoomLevel(default_zoom_level);
-    web_contents->ResetPageScale();
+    web_contents->SetPageScale(1.f);
     content::RecordAction(UserMetricsAction("ZoomNormal"));
     return;
   }
 
   // Generate a vector of zoom levels from an array of known presets along with
   // the default level added if necessary.
   std::vector<double> zoom_levels = PresetZoomLevels(default_zoom_level);
 
   if (zoom == content::PAGE_ZOOM_OUT) {
     // Iterate through the zoom levels in reverse order to find the next
@@ skipping 22 matching lines @@
         zoom_controller->SetZoomLevel(zoom_level);
         content::RecordAction(UserMetricsAction("ZoomPlus"));
         return;
       }
     }
     content::RecordAction(UserMetricsAction("ZoomPlus_AtMaximum"));
   }
 }
 
 }  // namespace ui_zoom