Fix crashes when NinePatchLayer doesn't have a resource.

cc/layers/nine_patch_layer.cc

Index: cc/layers/nine_patch_layer.cc
diff --git a/cc/layers/nine_patch_layer.cc b/cc/layers/nine_patch_layer.cc
index e32f6e0b125230633449e3141994ee2c81d82bed..68813fea3d09a8f5b5aa3af9bcea70b4a8b8afc4 100644
--- a/cc/layers/nine_patch_layer.cc
+++ b/cc/layers/nine_patch_layer.cc
@@ -72,6 +72,8 @@ bool NinePatchLayer::Update(ResourceUpdateQueue* queue,
     bitmap_dirty_ = false;
     updated = true;
   }
+
+  SetNeedsPushProperties();

[danakj, 2013/08/20 16:48:57]

Thanks, but I'd prefer if this matched the way similar layers do it.
https://code.google.com/p/chromium/codesearch#chromium/src/cc/layers/scrollba...

Inside PushPropertiesTo with a comment and a crbug, if you don't mind?

[ccameron, 2013/08/20 18:14:01]

Sure -- done! I find that a bit terrifying, but it's better to be consistent
than have a zoo of options.
Filed & added (from aelias' comment it had sounded like one may exist).

   return updated;
 }