Move ranker_model_loader to a new component.

components/machine_intelligence/ranker_model.h

 // Copyright 2017 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 COMPONENTS_TRANSLATE_CORE_BROWSER_RANKER_MODEL_H_
-#define COMPONENTS_TRANSLATE_CORE_BROWSER_RANKER_MODEL_H_
+#ifndef COMPONENTS_MACHINE_INTELLIGENCE_RANKER_MODEL_H_
+#define COMPONENTS_MACHINE_INTELLIGENCE_RANKER_MODEL_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 
-namespace chrome_intelligence {
+namespace machine_intelligence {
 
 class RankerModelProto;
 
-// Wrapper class for chrome_intelligence::TranslateRankerProto.
 class RankerModel {
  public:
   RankerModel();
   ~RankerModel();
 
   // Returns a new ranker model constructed from |data|.
   static std::unique_ptr<RankerModel> FromString(const std::string& data);
 
   const RankerModelProto& proto() const { return *proto_; }
   RankerModelProto* mutable_proto() const { return proto_.get(); }
 
   // Returns true if this ranker model has expired.
   bool IsExpired() const;
 
   const std::string& GetSourceURL() const;
 
   // Returns a serialization of this ranker model.
   std::string SerializeAsString() const;
 
  private:
   // The underlying ranker model proto.
   std::unique_ptr<RankerModelProto> proto_;
 
   DISALLOW_COPY_AND_ASSIGN(RankerModel);
 };
 
-}  // namesapce chrome_intelligence
+}  // namespace machine_intelligence
 
-#endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_RANKER_MODEL_H_
+#endif  // COMPONENTS_MACHINE_INTELLIGENCE_RANKER_MODEL_H_