ui: Make gfx::Point::Scale() mutate the class, similar to gfx::Rect.

ui/gfx/point.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_GFX_POINT_H_
 #define UI_GFX_POINT_H_
 
 #include "ui/base/ui_export.h"
 #include "ui/gfx/point_base.h"
 #include "ui/gfx/point_f.h"
@@ skipping 31 matching lines @@
 #if defined(OS_WIN)
   POINT ToPOINT() const;
 #elif defined(OS_MACOSX)
   CGPoint ToCGPoint() const;
 #endif
 
   operator PointF() const {
     return PointF(x(), y());
   }
 
-  PointF Scale(float scale) const WARN_UNUSED_RESULT {
-    return Scale(scale, scale);
-  }
-
-  PointF Scale(float x_scale, float y_scale) const WARN_UNUSED_RESULT {
-    return PointF(x() * x_scale, y() * y_scale);
-  }
-
   // Returns a string representation of point.
   std::string ToString() const;
 };
 
 inline bool operator==(const Point& lhs, const Point& rhs) {
   return lhs.x() == rhs.x() && lhs.y() == rhs.y();
 }
 
 inline bool operator!=(const Point& lhs, const Point& rhs) {
   return !(lhs == rhs);
@@ skipping 15 matching lines @@
   return Point(offset_from_origin.x(), offset_from_origin.y());
 }
 
 #if !defined(COMPILER_MSVC)
 extern template class PointBase<Point, int, Vector2d>;
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_POINT_H_