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diff --git a/base/gfx/rect.h b/base/gfx/rect.h
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// 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 contain()) to complain in this case.
+
+#ifndef BASE_GFX_RECT_H__
+#define BASE_GFX_RECT_H__
+
+#include "base/gfx/size.h"
+#include "base/gfx/point.h"
+
+typedef struct tagRECT RECT;
+
+namespace gfx {
+
+class Rect {
+ public:
+  Rect();
+  Rect(int width, int height);
+  Rect(int x, int y, int width, int height);
+  explicit Rect(const RECT& r);
+  Rect(const gfx::Point& origin, const gfx::Size& size);
+
+  ~Rect() {}
+
+  Rect& operator=(const RECT& r);
+
+  int x() const { return origin_.x(); }
+  void set_x(int x) { origin_.set_x(x); }
+
+  int y() const { return origin_.y(); }
+  void set_y(int y) { origin_.set_y(y); }
+
+  int width() const { return size_.width(); }
+  void set_width(int width);
+
+  int height() const { return size_.height(); }
+  void set_height(int height);
+
+  const gfx::Point& origin() const { return origin_; }
+  void set_origin(const gfx::Point& origin) { origin_ = origin; }
+
+  const gfx::Size& size() const { return size_; }
+
+  int right() const { return x() + width(); }
+  int bottom() const { return y() + height(); }
+
+  void SetRect(int x, int y, int width, int height);
+
+  // Shrink the rectangle by a horizontal and vertical distance on all sides.
+  void Inset(int horizontal, int vertical);
+
+  // Move the rectangle by a horizontal and vertical distance.
+  void Offset(int horizontal, int vertical);
+
+  // Returns true if the area of the rectangle is zero.
+  bool IsEmpty() const;
+
+  bool operator==(const Rect& other) const;
+
+  bool operator!=(const Rect& other) const {
+    return !(*this == other);
+  }
+
+  // Construct an equivalent Win32 RECT object.
+  RECT ToRECT() 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
+  // point (x + width, y + height) is not.
+  bool Contains(int point_x, int point_y) const;
+
+  // Returns true if this rectangle contains the specified rectangle.
+  bool Contains(const Rect& rect) const;
+
+  // Returns true if this rectangle intersects the specified rectangle.
+  bool Intersects(const Rect& rect) const;
+
+  // Computes the intersection of this rectangle with the given rectangle.
+  Rect Intersect(const Rect& rect) const;
+
+  // Computes the union of this rectangle with the given rectangle.  The union
+  // is the smallest rectangle containing both rectangles.
+  Rect Union(const Rect& rect) const;
+
+  // 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.
+  Rect Subtract(const Rect& rect) const;
+
+  // Returns true if this rectangle equals that of the supplied rectangle.
+  bool Equals(const Rect& 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.
+  Rect AdjustToFit(const Rect& rect) const;
+
+  // Returns the center of this rectangle.
+  Point CenterPoint() const;
+
+ private:
+  gfx::Point origin_;
+  gfx::Size size_;
+};
+
+}  // namespace gfx
+
+#ifdef UNIT_TEST
+
+inline std::ostream& operator<<(std::ostream& out, const gfx::Rect& r) {
+  return out << r.origin() << " " << r.size();
+}
+
+#endif  // #ifdef UNIT_TEST
+
+#endif  // BASE_GFX_RECT_H__