Make the LCD text device scale factor threshold 1.5 inclusive

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 113e54e3cdcad3610b7241522a2d5d51501298b3..d324083eac0f98f1075811823d6033144f4911ee 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -361,7 +361,9 @@ static bool DeviceScaleEnsuresTextQuality(float device_scale_factor) {
   // On Android, we never have subpixel antialiasing.
   return true;
 #else
-  return device_scale_factor > 1.5f;
+  // 1.5 is a common touchscreen tablet device scale factor. For such
+  // devices main thread antialiasing is a heavy burden.
+  return device_scale_factor >= 1.5f;
 #endif
 
 }