Move more web widgets painting from webkit to chrome.

gfx/rect.h

 // Copyright (c) 2010 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 146 matching lines @@
   // 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;
 
+  // Return a rectangle that has the same center point but with a size capped
+  // at given |size|.
+  Rect Center(const gfx::Size& size) const;
+
   // Returns true if this rectangle shares an entire edge (i.e., same width or
   // same height) with the given rectangle, and the rectangles do not overlap.
   bool SharesEdgeWith(const gfx::Rect& rect) const;
 
  private:
   gfx::Point origin_;
   gfx::Size size_;
 };
 
 std::ostream& operator<<(std::ostream& out, const gfx::Rect& r);
 
 }  // namespace gfx
 
 #endif  // GFX_RECT_H_