Integrate the Spelling service to Chrome.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
===================================================================
--- chrome/common/pref_names.cc	(revision 99616)
+++ chrome/common/pref_names.cc	(working copy)
@@ -1080,6 +1080,9 @@
 // String which represents the dictionary name for our spell-checker.
 const char kSpellCheckDictionary[] = "spellcheck.dictionary";
 
+// String which represents whether we use the spelling service.
+const char kSpellCheckUseSpellingService[] = "spellcheck.use_spelling_service";
+
 // Dictionary of schemes used by the external protocol handler.
 // The value is true if the scheme must be ignored.
 const char kExcludedSchemes[] = "protocol_handler.excluded_schemes";