cc: Fix size_t to int truncations in tiles/ and trees/

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index 84e9c0f8ba69c65fa70ce676ed5cc1f6e61e0ae7..6b7bb8d3c441ad3b40982e5f46b5b36849d42375 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -635,7 +635,7 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   // The number of direct children or dependent layers that need to be recursed
   // to in order for them or a descendent of them to push properties to the impl
   // side.
-  int num_dependents_need_push_properties_;
+  size_t num_dependents_need_push_properties_;

[danakj, 2015/06/09 17:39:49]

How come? We just ++ and -- it, it's not related to vectors or something? Or
where is it?

[vmpstr, 2015/06/09 18:37:17]

Hmm. I think this might've been just a test thing that had a truncations, I
fixed that part instead.

 
   // Tracks whether this layer may have changed stacking order with its
   // siblings.