Remove --default-device-scale-factor

ui/gfx/display.h

Index: ui/gfx/display.h
diff --git a/ui/gfx/display.h b/ui/gfx/display.h
index 13aaa8f539f19941ca27b3475484985db2b2e044..0bc2630bd1397e2f167a545a8e6e681cd5c40150 100644
--- a/ui/gfx/display.h
+++ b/ui/gfx/display.h
@@ -19,9 +19,9 @@ namespace gfx {
 // system, not in backing pixels.
 class UI_EXPORT Display {
  public:
-  // Returns the default value for the device scale factor, which is
-  // given by "--default-device-scale-factor".
-  static float GetDefaultDeviceScaleFactor();
+  // Returns the forced device scale factor, which is given by
+  // "--force-device-scale-factor".
+  static float GetForcedDeviceScaleFactor();
 
   // Creates a display with invalid id(-1) as default.
   Display();