Remove obsolete scale related APIs for cursor

ui/aura/test/test_cursor_client.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/aura/test/test_cursor_client.h"
 
 #include "ui/aura/client/cursor_client_observer.h"
 
 namespace aura {
 namespace test {
@@ skipping 31 matching lines @@
                     OnCursorVisibilityChanged(false));
 }
 
 void TestCursorClient::SetCursorSet(ui::CursorSetType cursor_set) {
 }
 
 ui::CursorSetType TestCursorClient::GetCursorSet() const {
   return ui::CURSOR_SET_NORMAL;
 }
 
-void TestCursorClient::SetScale(float scale) {
-}
-
-float TestCursorClient::GetScale() const {
-  return 1.f;
-}
-
 bool TestCursorClient::IsCursorVisible() const {
   return visible_;
 }
 
 void TestCursorClient::EnableMouseEvents() {
   mouse_events_enabled_ = true;
 }
 
 void TestCursorClient::DisableMouseEvents() {
   mouse_events_enabled_ = false;
@@ skipping 30 matching lines @@
   observers_.RemoveObserver(observer);
 }
 
 bool TestCursorClient::ShouldHideCursorOnKeyEvent(
     const ui::KeyEvent& event) const {
   return true;
 }
 
 }  // namespace test
 }  // namespace aura