Change dest_language to target_language in the logistic regression model for...

Change dest_language to target_language in the logistic regression model for consistency with google3 proto and translate_event_protos.

BUG=646711

Review-Url: https://codereview.chromium.org/2803353002
Cr-Commit-Position: refs/heads/master@{#463410}

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

@@ -32,7 +32,7 @@ message TranslateRankerModel {
     // 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;
   }

components/translate/core/browser/translate_ranker_impl.cc

@@ -259,7 +259,7 @@ double TranslateRankerImpl::CalculateScore(
       (features.denied_ratio * logit.decline_ratio_weight()) +
       (features.ignored_ratio * logit.ignore_ratio_weight()) +
       ScoreComponent(logit.source_language_weight(), features.src_lang) +
-      ScoreComponent(logit.dest_language_weight(), features.dst_lang) +
+      ScoreComponent(logit.target_language_weight(), features.dst_lang) +
       ScoreComponent(logit.country_weight(), features.country) +
       ScoreComponent(logit.locale_weight(), features.app_locale);
 

components/translate/core/browser/translate_ranker_impl_unittest.cc

@@ -152,8 +152,8 @@ std::unique_ptr<TranslateRankerImpl> TranslateRankerImplTest::GetRankerForTest(
   src_language_weight["fr"] = 0.05f;
   src_language_weight["zh"] = 0.06f;
 
-  auto& dest_language_weight = *details->mutable_dest_language_weight();
-  dest_language_weight["UNKNOWN"] = 0.00f;
+  auto& target_language_weight = *details->mutable_target_language_weight();
+  target_language_weight["UNKNOWN"] = 0.00f;
 
   auto& country_weight = *details->mutable_country_weight();
   country_weight["de"] = 0.07f;