add SK_API to include/record

include/record/SkRecording.h

Index: include/record/SkRecording.h
diff --git a/include/record/SkRecording.h b/include/record/SkRecording.h
index 2716ea62a1802f88f50ab99b3a82fcb8b1d67693..a4e8809c3a3f5ad2327de3dcf328e2fa217673e5 100644
--- a/include/record/SkRecording.h
+++ b/include/record/SkRecording.h
@@ -36,7 +36,7 @@ namespace EXPERIMENTAL {
  *  SkPlayback is thread safe; SkRecording is not.
  */
 
-class SkPlayback : SkNoncopyable {
+class SK_API SkPlayback : SkNoncopyable {
 public:
     // Remember, if you've got an SkPlayback*, you probably own it.  Don't forget to delete it!
     ~SkPlayback();
@@ -52,7 +52,7 @@ private:
     friend class SkRecording;
 };
 
-class SkRecording : SkNoncopyable {
+class SK_API SkRecording : SkNoncopyable {
 public:
     SkRecording(int width, int height);
     ~SkRecording();