Miscellaneous cleanup to reduce number of includes in platform/graphics/

Source/core/platform/graphics/FloatPoint.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2005 Nokia.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. 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.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 
  */
 
 #include "config.h"
 #include "core/platform/graphics/FloatPoint.h"
 
-#include <math.h>
-#include <limits>
 #include "core/platform/FloatConversion.h"
 #include "core/platform/graphics/IntPoint.h"
 #include "core/platform/graphics/LayoutPoint.h"
 #include "core/platform/graphics/LayoutSize.h"
 #include "core/platform/graphics/skia/SkiaUtils.h"
 #include "core/platform/graphics/transforms/AffineTransform.h"
 #include "core/platform/graphics/transforms/TransformationMatrix.h"
 #include "third_party/skia/include/core/SkPoint.h"
+#include "wtf/MathExtras.h"
+
+#include <limits>
+#include <math.h>
 
 namespace WebCore {
 
 FloatPoint::FloatPoint(const IntPoint& p) : m_x(p.x()), m_y(p.y())
 {
 }
 
 FloatPoint::FloatPoint(const LayoutPoint& p) : m_x(p.x()), m_y(p.y())
 {
 }
@@ skipping 48 matching lines @@
     double newX, newY;
     transform.map(static_cast<double>(m_x), static_cast<double>(m_y), newX, newY);
     return narrowPrecision(newX, newY);
 }
 
 FloatPoint FloatPoint::narrowPrecision(double x, double y)
 {
     return FloatPoint(narrowPrecisionToFloat(x), narrowPrecisionToFloat(y));
 }
 
+inline IntPoint roundedIntPoint(const FloatPoint& p)
+{
+    return IntPoint(clampToInteger(roundf(p.x())), clampToInteger(roundf(p.y())));
+}
+
 float findSlope(const FloatPoint& p1, const FloatPoint& p2, float& c)
 {
     if (p2.x() == p1.x())
         return std::numeric_limits<float>::infinity();
 
     // y = mx + c
     float slope = (p2.y() - p1.y()) / (p2.x() - p1.x());
     c = p1.y() - slope * p1.x();
     return slope;
 }
@@ skipping 20 matching lines @@
         return true;
     }
     
     // Find x at intersection, where ys overlap; x = (c' - c) / (m - m')
     intersection.setX((dOffset - pOffset) / (pSlope - dSlope));
     intersection.setY(pSlope * intersection.x() + pOffset);
     return true;
 }
 
 }