Revert of Revert of stop calling SkScalarDiv

gm/glyph_pos.cpp

Index: gm/glyph_pos.cpp
diff --git a/gm/glyph_pos.cpp b/gm/glyph_pos.cpp
index 0da59ac6f9e78534b3ba87c17224a2d6cc59e573..16cdfca11a8a0fda5c66d3b44395a6ae534e566c 100644
--- a/gm/glyph_pos.cpp
+++ b/gm/glyph_pos.cpp
@@ -82,10 +82,8 @@
         canvas->scale(3.0f, 3.0f);
         SkMatrix skew;
         skew.setIdentity();
-        skew.setSkewX(SkScalarDiv(8.0f,
-                                  25.0f));
-        skew.setSkewY(SkScalarDiv(2.0f,
-                                  25.0f));
+        skew.setSkewX(8.0f / 25.0f);
+        skew.setSkewY(2.0f / 25.0f);
         canvas->concat(skew);
         drawTestCase(canvas, 1.0f);
         canvas->restore();
@@ -95,11 +93,9 @@
         canvas->save();
         SkMatrix perspective;
         perspective.setIdentity();
-        perspective.setPerspX(-SkScalarDiv(SK_Scalar1, 340.0f));
-        perspective.setSkewX(SkScalarDiv(8.0f,
-                                         25.0f));
-        perspective.setSkewY(SkScalarDiv(2.0f,
-                                         25.0f));
+        perspective.setPerspX(-SkScalarInvert(340));
+        perspective.setSkewX(8.0f / 25.0f);
+        perspective.setSkewY(2.0f / 25.0f);
 
 
         canvas->concat(perspective);