Add support for rect-based event targeting in views

ui/gfx/point_conversions.cc

 // 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.
 
 #include "ui/gfx/point_conversions.h"
 
 #include "ui/gfx/safe_integer_conversions.h"
 
 namespace gfx {
 
 Point ToFlooredPoint(const PointF& point) {
   int x = ToFlooredInt(point.x());
   int y = ToFlooredInt(point.y());
   return Point(x, y);
 }
 
+Rect ToFlooredRect(const RectF& rect) {
+  int x = ToFlooredInt(rect.x());
+  int y = ToFlooredInt(rect.y());
+  int width = ToFlooredInt(rect.width());
+  int height = ToFlooredInt(rect.height());
+  return Rect(x, y, width, height);
+}
+
 Point ToCeiledPoint(const PointF& point) {
   int x = ToCeiledInt(point.x());
   int y = ToCeiledInt(point.y());
   return Point(x, y);
 }
 
 Point ToRoundedPoint(const PointF& point) {
   int x = ToRoundedInt(point.x());
   int y = ToRoundedInt(point.y());
   return Point(x, y);
 }
 
 }  // namespace gfx