disable using codecs until that can work in chrome

gm/cgm.c

Index: gm/cgm.c
diff --git a/gm/cgm.c b/gm/cgm.c
index 5a20a7d1bfe3a8c3e8def08e217ef495e015cecd..8e65bda30769755a558e849b91297f9f4753ad9a 100644
--- a/gm/cgm.c
+++ b/gm/cgm.c
@@ -67,8 +67,10 @@ void sk_test_c_api(sk_canvas_t* canvas) {
     sk_image_t* img1 = sk_image_new_from_data(data);
     sk_data_unref(data);
 
-    sk_canvas_draw_image(canvas, img1, W/2, H/2, NULL);
-    sk_image_unref(img1);
+    if (img1) {

[scroggo, 2014/12/30 11:14:33]

Can we at least log something in this case? It seems like this would hide an
error where we have SkImageDecoder but sk_image_new_from_data fails for some
reason.

+        sk_canvas_draw_image(canvas, img1, W/2, H/2, NULL);
+        sk_image_unref(img1);
+    }
 }