use SkScalar instead of int for loops, to avoid warning in canvas->translate() calls

BUG=

Review URL: https://codereview.chromium.org/15875012

git-svn-id: http://skia.googlecode.com/svn/trunk@9263 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/cubicpaths.cpp b/gm/cubicpaths.cpp
index 56ed729..e0d72b4 100644
--- a/gm/cubicpaths.cpp
+++ b/gm/cubicpaths.cpp
@@ -30,9 +30,9 @@
         SkPaint paint;
         SkRect bounds = path.getBounds();
         
-        for (int dy = -1; dy <= 1; ++dy) {
+        for (SkScalar dy = -1; dy <= 1; dy += 1) {
             canvas->save();
-            for (int dx = -1; dx <= 1; ++dx) {
+            for (SkScalar dx = -1; dx <= 1; dx += 1) {
                 canvas->save();
                 canvas->clipRect(bounds);
                 canvas->translate(dx, dy);