Re-fact TranslateMenuHelper.

chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java
index 98a7ff17af98871092090bf21a5a5c944ebb2290..3dab0c9553bfedd2679756eaf10a1dab061a7573 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/TranslateOptions.java
@@ -131,17 +131,11 @@ public class TranslateOptions {
     }
 
     public String sourceLanguageName() {
-        if (isValidLanguageCode(mSourceLanguageCode)) {
-            return mCodeToRepresentation.get(mSourceLanguageCode);
-        }
-        return "";
+        return getRepresentationByCode(mSourceLanguageCode);
     }
 
     public String targetLanguageName() {
-        if (isValidLanguageCode(mTargetLanguageCode)) {
-            return mCodeToRepresentation.get(mTargetLanguageCode);
-        }
-        return "";
+        return getRepresentationByCode(mTargetLanguageCode);
     }
 
     public String sourceLanguageCode() {
@@ -232,6 +226,13 @@ public class TranslateOptions {
         return toggleState(ALWAYS_LANGUAGE, value);
     }
 
+    public String getRepresentationByCode(String languageCode) {

[gone, 2017/04/24 20:12:19]

1) getRepresentationFromCode
2) you need javadoc for public methods

[Leo, 2017/04/25 14:08:05]

Done.

+        if (isValidLanguageCode(languageCode)) {
+            return mCodeToRepresentation.get(languageCode);
+        }
+        return "";
+    }
+
     private boolean toggleState(int element, boolean newValue) {
         if (!checkElementBoundaries(element)) return false;