Fix for out-of-sync scale factor issue

content/browser/renderer_host/render_widget_host_impl.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1083 matching lines @@
   keyboard_listeners_.remove(listener);
 }
 
 void RenderWidgetHostImpl::NotifyScreenInfoChanged() {
   WebKit::WebScreenInfo screen_info;
   GetWebScreenInfo(&screen_info);
   Send(new ViewMsg_ScreenInfoChanged(GetRoutingID(), screen_info));
 }
 
 void RenderWidgetHostImpl::SetDeviceScaleFactor(float scale) {
+  // Send secreen info as well because JavaScript API |window.open|
+  // uses screen info to determine the scale factor (crbug.com/155201).
+  // TODO(oshima|thakis): Consolidate SetDeviceScaleFactor and
+  // ScreenInfoChanged. crbug.com/155213.
+  NotifyScreenInfoChanged();
   Send(new ViewMsg_SetDeviceScaleFactor(GetRoutingID(), scale));
 }
 
 void RenderWidgetHostImpl::UpdateVSyncParameters(base::TimeTicks timebase,
                                                  base::TimeDelta interval) {
   Send(new ViewMsg_UpdateVSyncParameters(GetRoutingID(), timebase, interval));
 }
 
 void RenderWidgetHostImpl::RendererExited(base::TerminationStatus status,
                                           int exit_code) {
@@ skipping 1007 matching lines @@
     return;
 
   OnRenderAutoResized(new_size);
 }
 
 void RenderWidgetHostImpl::DetachDelegate() {
   delegate_ = NULL;
 }
 
 }  // namespace content