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/animator/SkScriptRuntime.cpp b/src/animator/SkScriptRuntime.cpp
index 061847e..78d9d5c 100644
--- a/src/animator/SkScriptRuntime.cpp
+++ b/src/animator/SkScriptRuntime.cpp
@@ -210,7 +210,7 @@
                 return false;
             break;
         case SkScriptEngine2::kScalarToInt:
-            operand[0].fS32 = SkScalarFloor(operand[0].fScalar);
+            operand[0].fS32 = SkScalarFloorToInt(operand[0].fScalar);
             break;
         // arithmetic ops
         case SkScriptEngine2::kAddInt: