Add SpellingServiceClient::IsAvailable().

chrome/browser/tab_contents/spelling_menu_observer.cc

Index: chrome/browser/tab_contents/spelling_menu_observer.cc
===================================================================
--- chrome/browser/tab_contents/spelling_menu_observer.cc	(revision 142020)
+++ chrome/browser/tab_contents/spelling_menu_observer.cc	(working copy)
@@ -59,12 +59,9 @@
   }
 
   // Append a placeholder item for the suggestion from the Spelling serivce and
-  // send a request to the service if we have enabled the spellchecking and
-  // integrated the Spelling service.
-  PrefService* pref = profile->GetPrefs();
-  if (params.spellcheck_enabled &&
-      pref->GetBoolean(prefs::kEnableSpellCheck) &&
-      pref->GetBoolean(prefs::kSpellCheckUseSpellingService)) {
+  // send a request to the service if we can retrieve suggestions from it.
+  if (SpellingServiceClient::IsAvailable(profile,
+                                         SpellingServiceClient::SUGGEST)) {
     // Retrieve the misspelled word to be sent to the Spelling service.
     string16 text = params.misspelled_word;
     if (!text.empty()) {