Revert of stop calling SkScalarDiv (patchset #4 id:60001 of https://codereview.chromium.org/1135053002/)

Reason for revert:
need to wait for Blink roll (and patch android)

Original issue's description:
> stop calling SkScalarDiv
>
> BUG=skia:
> TBR=
>
> Committed: https://skia.googlesource.com/skia/+/67d71c898249a7af3523b16c6a69895a63bfae0a

TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1138263002
diff --git a/src/animator/SkDisplayPost.cpp b/src/animator/SkDisplayPost.cpp
index 0fd4a06..cc45b21 100644
--- a/src/animator/SkDisplayPost.cpp
+++ b/src/animator/SkDisplayPost.cpp
@@ -76,7 +76,7 @@
     delete eventType;
 
     if (delay > 0) {
-        SkDebugf("delay=\"%g\" ", delay * 0.001);
+        SkDebugf("delay=\"%g\" ", SkScalarToFloat(SkScalarDiv(delay, 1000)));
     }
 //  if (initialized == false)
 //      SkDebugf("(uninitialized) ");