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

chrome/common/spellcheck_common.h

Index: chrome/common/spellcheck_common.h
diff --git a/chrome/common/spellcheck_common.h b/chrome/common/spellcheck_common.h
index 9c3f706f031d22b16aa13e6531a3a4ab00c8accd..a347dbfaa7baeb72b2cf5d40f4b308ea433313f9 100644
--- a/chrome/common/spellcheck_common.h
+++ b/chrome/common/spellcheck_common.h
@@ -13,6 +13,8 @@ namespace base {
 class FilePath;
 }
 
+class PrefService;
+
 namespace chrome {
 namespace spellcheck_common {
 
@@ -40,6 +42,9 @@ static const size_t MAX_SYNCABLE_DICTIONARY_WORDS = 1300;
 // dictionary.
 static const size_t MAX_CUSTOM_DICTIONARY_WORD_BYTES = 99;
 
+// Character that separates language codes saved in preferences.
+static const char kDictionaryLanguagesSeparator = ',';
+
 typedef std::vector<std::string> WordList;
 typedef std::set<std::string> WordSet;
 
@@ -59,6 +64,11 @@ void GetISOLanguageCountryCodeFromLocale(const std::string& locale,
                                          std::string* language_code,
                                          std::string* country_code);
 
+// Reads the spellcheck.dictionary or spellcheck.dictionaries preference
+// (depending on whether the enable-multilingual-spellchecker flag is set), and
+// returns the language codes.
+std::vector<std::string> GetDictionaryLanguagesPref(PrefService* prefs);
+
 }  // namespace spellcheck_common
 }  // namespace chrome