no virtual destructor for point/size/rect

ui/gfx/rect.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.
 
 // Defines a simple integer rectangle class.  The containment semantics
 // are array-like; that is, the coordinate (x, y) is considered to be
 // contained by the rectangle, but the coordinate (x + width, y) is not.
 // The class will happily let you create malformed rectangles (that is,
 // rectangles with negative width and/or height), but there will be assertions
 // in the operations (such as Contains()) to complain in this case.
@@ skipping 26 matching lines @@
 #if defined(OS_WIN)
   explicit Rect(const RECT& r);
 #elif defined(OS_MACOSX)
   explicit Rect(const CGRect& r);
 #elif defined(TOOLKIT_GTK)
   explicit Rect(const GdkRectangle& r);
 #endif
   explicit Rect(const gfx::Size& size);
   Rect(const gfx::Point& origin, const gfx::Size& size);
 
-  virtual ~Rect();
+  ~Rect();
 
 #if defined(OS_WIN)
   Rect& operator=(const RECT& r);
 #elif defined(OS_MACOSX)
   Rect& operator=(const CGRect& r);
 #elif defined(TOOLKIT_GTK)
   Rect& operator=(const GdkRectangle& r);
 #endif
 
 #if defined(OS_WIN)
   // Construct an equivalent Win32 RECT object.
   RECT ToRECT() const;
 #elif defined(TOOLKIT_GTK)
   GdkRectangle ToGdkRectangle() const;
 #elif defined(OS_MACOSX)
   // Construct an equivalent CoreGraphics object.
   CGRect ToCGRect() const;
 #endif
 
   std::string ToString() const;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RECT_H_