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

Source/core/platform/graphics/FloatPoint.h

 /*
  * 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
@@ skipping 11 matching lines @@
  * 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.
  */
 
 #ifndef FloatPoint_h
 #define FloatPoint_h
 
 #include "core/platform/graphics/FloatSize.h"
 #include "core/platform/graphics/IntPoint.h"
-#include "wtf/MathExtras.h"
 
 #if OS(DARWIN)
 typedef struct CGPoint CGPoint;
 
 #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
 typedef struct CGPoint NSPoint;
 #else
 typedef struct _NSPoint NSPoint;
 #endif
 #endif
@@ skipping 159 matching lines @@
 {
     return a.x() != b.x() || a.y() != b.y();
 }
 
 inline float operator*(const FloatPoint& a, const FloatPoint& b)
 {
     // dot product
     return a.dot(b);
 }
 
-inline IntPoint roundedIntPoint(const FloatPoint& p)
-{
-    return IntPoint(clampToInteger(roundf(p.x())), clampToInteger(roundf(p.y())));
-}
+IntPoint roundedIntPoint(const FloatPoint&);
 
 inline IntPoint flooredIntPoint(const FloatPoint& p)
 {
     return IntPoint(clampToInteger(floorf(p.x())), clampToInteger(floorf(p.y())));
 }
 
 inline IntPoint ceiledIntPoint(const FloatPoint& p)
 {
     return IntPoint(clampToInteger(ceilf(p.x())), clampToInteger(ceilf(p.y())));
 }
 
 inline IntSize flooredIntSize(const FloatPoint& p)
 {
     return IntSize(clampToInteger(floorf(p.x())), clampToInteger(floorf(p.y())));
 }
 
 inline FloatSize toFloatSize(const FloatPoint& a)
 {
     return FloatSize(a.x(), a.y());
 }
 
 float findSlope(const FloatPoint& p1, const FloatPoint& p2, float& c);
 
 // Find point where lines through the two pairs of points intersect. Returns false if the lines don't intersect.
 bool findIntersection(const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& d1, const FloatPoint& d2, FloatPoint& intersection);
 
 }
 
 #endif