add picture to c api

include/c/sk_picture.h

Index: include/c/sk_picture.h
diff --git a/include/c/sk_picture.h b/include/c/sk_picture.h
new file mode 100644
index 0000000000000000000000000000000000000000..f062d32e6938e0cf1121e6e0f440487e293302e8
--- /dev/null
+++ b/include/c/sk_picture.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+// EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL EXPERIMENTAL
+// DO NOT USE -- FOR INTERNAL TESTING ONLY
+
+#ifndef sk_picture_DEFINED
+#define sk_picture_DEFINED
+
+#include "sk_types.h"
+
+SK_C_PLUS_PLUS_BEGIN_GUARD
+
+sk_picture_recorder_t* sk_picture_recorder_new();
+void sk_picture_recorder_delete(sk_picture_recorder_t*);
+
+sk_canvas_t* sk_picture_recorder_begin_recording(sk_picture_recorder_t*, const sk_rect_t*);
+sk_picture_t* sk_picture_recorder_end_recording(sk_picture_recorder_t*);
+
+void sk_picture_ref(sk_picture_t*);
+void sk_picture_unref(sk_picture_t*);
+
+uint32_t sk_picture_get_unique_id(sk_picture_t*);
+sk_rect_t sk_picture_get_bounds(sk_picture_t*);
+
+SK_C_PLUS_PLUS_END_GUARD
+
+#endif