deprecate SkScalarRound (and its ilk), use SkScalarRound[ToInt,ToScalar]. #define SK_SUPPORT_DEPRECATED_SCALARROUND for legacy clients

BUG=
R=robertphillips@google.com

Review URL: https://codereview.chromium.org/111353003

git-svn-id: http://skia.googlecode.com/svn/trunk@12719 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkDiscretePathEffect.cpp b/src/effects/SkDiscretePathEffect.cpp
index eece2ef..b7ec1de 100644
--- a/src/effects/SkDiscretePathEffect.cpp
+++ b/src/effects/SkDiscretePathEffect.cpp
@@ -30,7 +30,7 @@
     bool doFill = rec->isFillStyle();
 
     SkPathMeasure   meas(src, doFill);
-    uint32_t        seed = SkScalarRound(meas.getLength());
+    uint32_t        seed = SkScalarRoundToInt(meas.getLength());
     SkLCGRandom     rand(seed ^ ((seed << 16) | (seed >> 16)));
     SkScalar        scale = fPerterb;
     SkPoint         p;
@@ -42,7 +42,7 @@
         if (fSegLength * (2 + doFill) > length) {
             meas.getSegment(0, length, dst, true);  // to short for us to mangle
         } else {
-            int         n = SkScalarRound(SkScalarDiv(length, fSegLength));
+            int         n = SkScalarRoundToInt(length / fSegLength);
             SkScalar    delta = length / n;
             SkScalar    distance = 0;