cc: Remove all blimp code from cc.

cc/layers/layer_position_constraint.h

 // Copyright 2013 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_POSITION_CONSTRAINT_H_
 #define CC_LAYERS_LAYER_POSITION_CONSTRAINT_H_
 
 #include "cc/base/cc_export.h"
 
 namespace cc {
 
-namespace proto {
-class LayerPositionConstraint;
-}
-
 class CC_EXPORT LayerPositionConstraint {
  public:
   LayerPositionConstraint();
 
   void set_is_fixed_position(bool fixed) { is_fixed_position_ = fixed; }
   bool is_fixed_position() const { return is_fixed_position_; }
   void set_is_fixed_to_right_edge(bool fixed) {
     is_fixed_to_right_edge_ = fixed;
   }
   bool is_fixed_to_right_edge() const { return is_fixed_to_right_edge_; }
   void set_is_fixed_to_bottom_edge(bool fixed) {
     is_fixed_to_bottom_edge_ = fixed;
   }
   bool is_fixed_to_bottom_edge() const { return is_fixed_to_bottom_edge_; }
 
-  void ToProtobuf(proto::LayerPositionConstraint* proto) const;
-  void FromProtobuf(const proto::LayerPositionConstraint& proto);
-
   bool operator==(const LayerPositionConstraint&) const;
   bool operator!=(const LayerPositionConstraint&) const;
 
  private:
   bool is_fixed_position_       : 1;
   bool is_fixed_to_right_edge_  : 1;
   bool is_fixed_to_bottom_edge_ : 1;
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_POSITION_CONSTRAINT_H_