Enables the user to select multiple languages for spellchecking (UI)

chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h

Index: chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h
diff --git a/chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h b/chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h
index bd0fa392f7c6ba4c1262dfa3eb2c2168de561116..2bfafbb6f6e73ddcaa209839639f875f6ca97679 100644
--- a/chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h
+++ b/chrome/browser/renderer_context_menu/spellchecker_submenu_observer.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_RENDERER_CONTEXT_MENU_SPELLCHECKER_SUBMENU_OBSERVER_H_
 #define CHROME_BROWSER_RENDERER_CONTEXT_MENU_SPELLCHECKER_SUBMENU_OBSERVER_H_
 
+#include <set>
 #include <string>
 #include <vector>
 
@@ -13,6 +14,7 @@
 #include "components/renderer_context_menu/render_view_context_menu_observer.h"
 #include "ui/base/models/simple_menu_model.h"
 
+class PrefService;
 class RenderViewContextMenuProxy;
 
 // A class that implements the 'spell-checker options' submenu. This class
@@ -32,6 +34,14 @@ class SpellCheckerSubMenuObserver : public RenderViewContextMenuObserver {
   virtual void ExecuteCommand(int command_id) override;
 
  private:
+#if !defined(OS_MACOSX)
+  void AddLanguagesAsRadioItems();
+  void AddLanguagesAsCheckItems();
+
+  void UpdateSpellcheckDictionariesWithLanguage(size_t language, PrefService*);
+  void SetLanguageAsSpellcheckDictionary(size_t language, PrefService*);
+#endif  // !OS_MACOSX
+
   // The interface for adding a submenu to the parent.
   RenderViewContextMenuProxy* proxy_;
 
@@ -43,7 +53,7 @@ class SpellCheckerSubMenuObserver : public RenderViewContextMenuObserver {
   // Hunspell spelling submenu.
   // The radio items representing languages available for spellchecking.
   int language_group_;
-  int language_selected_;
+  std::set<int> languages_selected_;
   std::vector<std::string> languages_;
 #endif  // !OS_MACOSX