content: A couple of device-scale-factor fixes:

content/renderer/render_widget.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/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 1658 matching lines @@
 }
 
 bool RenderWidget::CanComposeInline() {
   return true;
 }
 
 WebScreenInfo RenderWidget::screenInfo() {
   return screen_info_;
 }
 
+float RenderWidget::deviceScaleFactor() {
+  return device_scale_factor_;
+}
+
 void RenderWidget::resetInputMethod() {
   if (!input_method_is_active_)
     return;
 
   // If the last text input type is not None, then we should finish any
   // ongoing composition regardless of the new text input type.
   if (text_input_type_ != ui::TEXT_INPUT_TYPE_NONE) {
     // If a composition text exists, then we need to let the browser process
     // to cancel the input method's ongoing composition session.
     if (webwidget_->confirmComposition())
@@ skipping 38 matching lines @@
   }
 }
 
 bool RenderWidget::WillHandleMouseEvent(const WebKit::WebMouseEvent& event) {
   return false;
 }
 
 bool RenderWidget::WebWidgetHandlesCompositorScheduling() const {
   return false;
 }