Modify languageSettingsPrivate IDL and flesh out stub implementation

chrome/browser/extensions/api/language_settings_private/language_settings_private_api.h

 // Copyright 2015 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 CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_
 
 #include "base/macros.h"
 #include "extensions/browser/extension_function.h"
 
@@ skipping 28 matching lines @@
  protected:
   ~LanguageSettingsPrivateSetLanguageListFunction() override;
 
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateSetLanguageListFunction);
 };
 
-// Implements the languageSettingsPrivate.getSpellCheckDictionaryStatus method.
-class LanguageSettingsPrivateGetSpellCheckDictionaryStatusFunction
+// Implements the languageSettingsPrivate.getSpellcheckDictionaryStatuses
+// method.
+class LanguageSettingsPrivateGetSpellcheckDictionaryStatusesFunction
     : public UIThreadExtensionFunction {
  public:
-  LanguageSettingsPrivateGetSpellCheckDictionaryStatusFunction();
+  LanguageSettingsPrivateGetSpellcheckDictionaryStatusesFunction();
   DECLARE_EXTENSION_FUNCTION(
-      "languageSettingsPrivate.getSpellCheckDictionaryStatus",
+      "languageSettingsPrivate.getSpellcheckDictionaryStatuses",
       LANGUAGESETTINGSPRIVATE_GETSPELLCHECKDICTIONARYSTATUS)
 
  protected:
-  ~LanguageSettingsPrivateGetSpellCheckDictionaryStatusFunction() override;
+  ~LanguageSettingsPrivateGetSpellcheckDictionaryStatusesFunction() override;
 
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(
-      LanguageSettingsPrivateGetSpellCheckDictionaryStatusFunction);
+      LanguageSettingsPrivateGetSpellcheckDictionaryStatusesFunction);
 };
 
-// Implements the languageSettingsPrivate.getSpellCheckWords method.
-class LanguageSettingsPrivateGetSpellCheckWordsFunction
+// Implements the languageSettingsPrivate.getSpellcheckWords method.
+class LanguageSettingsPrivateGetSpellcheckWordsFunction
     : public UIThreadExtensionFunction {
  public:
-  LanguageSettingsPrivateGetSpellCheckWordsFunction();
-  DECLARE_EXTENSION_FUNCTION("languageSettingsPrivate.getSpellCheckWords",
+  LanguageSettingsPrivateGetSpellcheckWordsFunction();
+  DECLARE_EXTENSION_FUNCTION("languageSettingsPrivate.getSpellcheckWords",
                              LANGUAGESETTINGSPRIVATE_GETSPELLCHECKWORDS)
 
  protected:
-  ~LanguageSettingsPrivateGetSpellCheckWordsFunction() override;
+  ~LanguageSettingsPrivateGetSpellcheckWordsFunction() override;
 
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateGetSpellCheckWordsFunction);
+  DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateGetSpellcheckWordsFunction);
 };
 
 // Implements the languageSettingsPrivate.getTranslateTargetLanguage method.
 class LanguageSettingsPrivateGetTranslateTargetLanguageFunction
     : public UIThreadExtensionFunction {
  public:
   LanguageSettingsPrivateGetTranslateTargetLanguageFunction();
   DECLARE_EXTENSION_FUNCTION(
       "languageSettingsPrivate.getTranslateTargetLanguage",
       LANGUAGESETTINGSPRIVATE_GETTRANSLATETARGETLANGUAGE)
@@ skipping 59 matching lines @@
   // ExtensionFunction overrides.
   ResponseAction Run() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LanguageSettingsPrivateRemoveInputMethodFunction);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_LANGUAGE_SETTINGS_PRIVATE_LANGUAGE_SETTINGS_PRIVATE_API_H_