Switch to standard integer types in cc/.

cc/layers/layer_iterator.h

 // Copyright 2012 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_ITERATOR_H_
 #define CC_LAYERS_LAYER_ITERATOR_H_
 
+#include <stddef.h>
+
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/trees/layer_tree_host_common.h"
 
 namespace cc {
 
 // These classes provide means to iterate over the
 // RenderSurfaceImpl-LayerImpl tree.
 
 // Example code follows, for a tree of LayerImpl/RenderSurfaceImpl objects.
@@ skipping 263 matching lines @@
   // Since the iterator must also stop at the layers representing
   // the target surface, this is done by setting the current_layer_index
   // to a value of
   // LayerIteratorValue::kLayerIndexRepresentingTargetRenderSurface.
   size_t current_layer_index_;
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_ITERATOR_H_