fix size_t/int warnings

TBR=caryclark@google.com

Author: reed@chromium.org

Review URL: https://codereview.chromium.org/265163003

git-svn-id: http://skia.googlecode.com/svn/trunk@14560 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkAnimateSet.cpp b/src/animator/SkAnimateSet.cpp
index f153b16..d146118 100644
--- a/src/animator/SkAnimateSet.cpp
+++ b/src/animator/SkAnimateSet.cpp
@@ -62,7 +62,7 @@
     fReset = dur != 1;
     SkDisplayTypes outType = fFieldInfo->getType();
     int comps = outType == SkType_String || outType == SkType_DynamicString ? 1 :
-        fFieldInfo->getSize((const SkDisplayable*) fTarget) / sizeof(int);
+        (int)fFieldInfo->getSize((const SkDisplayable*) fTarget) / sizeof(int);
     if (fValues.getType() == SkType_Unknown) {
         fValues.setType(outType);
         fValues.setCount(comps);