Implicit coversion operators from integer geometry types to floating point.

ui/gfx/rect_base.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.
 
 // A template for a simple 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 57 matching lines @@
   InsetsClass InsetsFrom(const Class& inner) const {
     return InsetsClass(inner.y() - y(),
                        inner.x() - x(),
                        bottom() - inner.bottom(),
                        right() - inner.right());
   }
 
   // Returns true if the area of the rectangle is zero.
   bool IsEmpty() const { return size_.IsEmpty(); }
 
-  bool operator==(const Class& other) const;
-
-  bool operator!=(const Class& other) const {
-    return !(*this == other);
-  }
-
   // A rect is less than another rect if its origin is less than
   // the other rect's origin. If the origins are equal, then the
   // shortest rect is less than the other. If the origin and the
   // height are equal, then the narrowest rect is less than.
   // This comparison is required to use Rects in sets, or sorted
   // vectors.
   bool operator<(const Class& other) const;
 
   // Returns true if the point identified by point_x and point_y falls inside
   // this rectangle.  The point (x, y) is inside the rectangle, but the
@@ skipping 17 matching lines @@
   // Computes the union of this rectangle with the given rectangle.  The union
   // is the smallest rectangle containing both rectangles.
   Class Union(const Class& rect) const WARN_UNUSED_RESULT;
 
   // Computes the rectangle resulting from subtracting |rect| from |this|.  If
   // |rect| does not intersect completely in either the x- or y-direction, then
   // |*this| is returned.  If |rect| contains |this|, then an empty Rect is
   // returned.
   Class Subtract(const Class& rect) const WARN_UNUSED_RESULT;
 
-  // Returns true if this rectangle equals that of the supplied rectangle.
-  bool Equals(const Class& rect) const {
-    return *this == rect;
-  }
-
   // Fits as much of the receiving rectangle into the supplied rectangle as
   // possible, returning the result. For example, if the receiver had
   // a x-location of 2 and a width of 4, and the supplied rectangle had
   // an x-location of 0 with a width of 5, the returned rectangle would have
   // an x-location of 1 with a width of 4.
   Class AdjustToFit(const Class& rect) const WARN_UNUSED_RESULT;
 
   // Returns the center of this rectangle.
   PointClass CenterPoint() const;
 
@@ skipping 17 matching lines @@
   ~RectBase();
 
  private:
   PointClass origin_;
   SizeClass size_;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RECT_BASE_H_