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

cc/layers/layer.h

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_LAYERS_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 617 matching lines @@
 
   void reset_raster_scale_to_unknown() { raster_scale_ = 0.f; }
 
   // This flag is set when the layer needs to push properties to the impl
   // side.
   bool needs_push_properties_;
 
   // 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.
   bool stacking_order_changed_;
 
   // The update rect is the region of the compositor resource that was
   // actually updated by the compositor. For layers that may do updating
   // outside the compositor's control (i.e. plugin layers), this information
   // is not available and the update rect will remain empty.
   // Note this rect is in layer space (not content space).
@@ skipping 148 matching lines @@
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_