Updating device scale factor thresholds

ui/display/manager/chromeos/display_change_observer.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 "ui/display/manager/chromeos/display_change_observer.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 #include <string>
@@ skipping 20 matching lines @@
 namespace {
 
 // The DPI threshold to determine the device scale factor.
 // DPI higher than |dpi| will use |device_scale_factor|.
 struct DeviceScaleFactorDPIThreshold {
   float dpi;
   float device_scale_factor;
 };
 
 const DeviceScaleFactorDPIThreshold kThresholdTable[] = {
-    {200.0f, 2.0f},
+    {220.0f, 2.0f},
+    {180.0f, 1.5f},
     {150.0f, 1.25f},
     {0.0f, 1.0f},
 };
 
 // 1 inch in mm.
 const float kInchInMm = 25.4f;
 
 // The minimum pixel width whose monitor can be called as '4K'.
 const int kMinimumWidthFor4K = 3840;
 
@@ skipping 246 matching lines @@
 // static
 float DisplayChangeObserver::FindDeviceScaleFactor(float dpi) {
   for (size_t i = 0; i < arraysize(kThresholdTable); ++i) {
     if (dpi > kThresholdTable[i].dpi)
       return kThresholdTable[i].device_scale_factor;
   }
   return 1.0f;
 }
 
 }  // namespace display