Use the screen info's scale factor to scale the drag image

content/renderer/media/android/webmediaplayer_android.cc

 // Copyright 2013 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/media/android/webmediaplayer_android.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 1132 matching lines @@
     const std::string& remote_playback_message) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   if (!video_weblayer_)
     return;
 
   // TODO(johnme): Should redraw this frame if the layer bounds change; but
   // there seems no easy way to listen for the layer resizing (as opposed to
   // OnVideoSizeChanged, which is when the frame sizes of the video file
   // change). Perhaps have to poll (on main thread of course)?
   gfx::Size video_size_css_px = video_weblayer_->bounds();
-  float device_scale_factor = frame_->view()->deviceScaleFactor();
+  RenderView* render_view = RenderView::FromWebView(frame_->view());
+  float device_scale_factor = render_view->GetDeviceScaleFactor();
   // canvas_size will be the size in device pixels when pageScaleFactor == 1
   gfx::Size canvas_size(
       static_cast<int>(video_size_css_px.width() * device_scale_factor),
       static_cast<int>(video_size_css_px.height() * device_scale_factor));
 
   SkBitmap bitmap;
   bitmap.allocN32Pixels(canvas_size.width(), canvas_size.height());
 
   // Create the canvas and draw the "Casting to <Chromecast>" text on it.
   SkCanvas canvas(bitmap);
@@ skipping 789 matching lines @@
     result = PREDICTION_RESULT_PATH_BASED_WAS_BETTER;
   } else if (is_hls_url == is_hls) {
     result = PREDICTION_RESULT_URL_BASED_WAS_BETTER;
   }
   UMA_HISTOGRAM_ENUMERATION(
       "Media.Android.IsHttpLiveStreamingMediaPredictionResult",
       result, PREDICTION_RESULT_MAX);
 }
 
 }  // namespace content