stop using SkScalarMul

BUG=skia:

Change-Id: Ie41d8665a1c62ba8eddc93d8cfefaf64ddc52ff8
Reviewed-on: https://skia-review.googlesource.com/8411
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/tests/ClipStackTest.cpp b/tests/ClipStackTest.cpp
index 8448f4c..744ef18 100644
--- a/tests/ClipStackTest.cpp
+++ b/tests/ClipStackTest.cpp
@@ -979,8 +979,8 @@
             bool doSave = r.nextBool();
 
             SkSize size = SkSize::Make(
-                SkScalarMul(kBounds.width(), r.nextRangeScalar(kMinElemSizeFrac, kMaxElemSizeFrac)),
-                SkScalarMul(kBounds.height(), r.nextRangeScalar(kMinElemSizeFrac, kMaxElemSizeFrac)));
+                kBounds.width()  * r.nextRangeScalar(kMinElemSizeFrac, kMaxElemSizeFrac),
+                kBounds.height() * r.nextRangeScalar(kMinElemSizeFrac, kMaxElemSizeFrac));
 
             SkPoint xy = {r.nextRangeScalar(kBounds.fLeft, kBounds.fRight - size.fWidth),
                           r.nextRangeScalar(kBounds.fTop, kBounds.fBottom - size.fHeight)};