Third wave of Win64 warning cleanup

https://codereview.chromium.org/27487003/



git-svn-id: http://skia.googlecode.com/svn/trunk@11817 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/texteffects.cpp b/gm/texteffects.cpp
index b46753d..7964de9 100644
--- a/gm/texteffects.cpp
+++ b/gm/texteffects.cpp
@@ -194,7 +194,7 @@
 
         SkString str("Hamburgefons");
 
-        for (size_t i = 0; i < SK_ARRAY_COUNT(gRastProcs); i++) {
+        for (int i = 0; i < static_cast<int>(SK_ARRAY_COUNT(gRastProcs)); i++) {
             apply_shader(&paint, i);
 
             //  paint.setMaskFilter(NULL);