Change dest_language to target_language in the logistic regression model for consistency with googl…

components/translate/core/browser/proto/translate_ranker_model.proto

 // Copyright (c) 2016 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.
 //
 // Experimental Translation Assist Model to allow/suppress translation prompts.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
@@ skipping 14 matching lines @@
     optional float ignore_ratio_weight = 4;
 
     optional float accept_count_weight = 9;
     optional float decline_count_weight = 10;
     optional float ignore_count_weight = 11;
 
     // One-hot features are encoded in the form of a map. These maps
     // each contain an element 'UNKNOWN' to use in case the key is not
     // found in the map.
     map<string, float> source_language_weight = 5;
-    map<string, float> dest_language_weight = 6;
+    map<string, float> target_language_weight = 6;
     map<string, float> country_weight = 7;
     map<string, float> locale_weight = 8;
   }
 
   oneof model_revision {
     LogisticRegressionModel logistic_regression_model = 2;
   }
 }