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

Source/core/platform/graphics/FloatPoint.cpp

Index: Source/core/platform/graphics/FloatPoint.cpp
diff --git a/Source/core/platform/graphics/FloatPoint.cpp b/Source/core/platform/graphics/FloatPoint.cpp
index 3c1e681fec7be629c8e9807d79b74151b208575f..8a38c898c8dcafae59b21949716e573dae699cf5 100644
--- a/Source/core/platform/graphics/FloatPoint.cpp
+++ b/Source/core/platform/graphics/FloatPoint.cpp
@@ -27,8 +27,6 @@
 #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"
@@ -37,6 +35,10 @@
 #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 {
 
@@ -105,6 +107,11 @@ 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())