Rename spellchecker preprocessor flag

chrome/browser/spellchecker/spellcheck_message_filter.cc

Index: chrome/browser/spellchecker/spellcheck_message_filter.cc
diff --git a/chrome/browser/spellchecker/spellcheck_message_filter.cc b/chrome/browser/spellchecker/spellcheck_message_filter.cc
index 5c39888aece4d59c1a996e2f0a3135bce69322e5..2cd28a16a62aa51d7841fedc8b1d9d8514d2aab2 100644
--- a/chrome/browser/spellchecker/spellcheck_message_filter.cc
+++ b/chrome/browser/spellchecker/spellcheck_message_filter.cc
@@ -37,7 +37,7 @@ void SpellCheckMessageFilter::OverrideThreadForMessage(
       message.type() == SpellCheckHostMsg_NotifyChecked::ID ||
       message.type() == SpellCheckHostMsg_RespondDocumentMarkers::ID)
     *thread = BrowserThread::UI;
-#if !defined(USE_PLATFORM_SPELLCHECKER)
+#if !defined(USE_BROWSER_SPELLCHECKER)
   if (message.type() == SpellCheckHostMsg_CallSpellingService::ID)
     *thread = BrowserThread::UI;
 #endif
@@ -52,7 +52,7 @@ bool SpellCheckMessageFilter::OnMessageReceived(const IPC::Message& message) {
                         OnNotifyChecked)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_RespondDocumentMarkers,
                         OnRespondDocumentMarkers)
-#if !defined(USE_PLATFORM_SPELLCHECKER)
+#if !defined(USE_BROWSER_SPELLCHECKER)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_CallSpellingService,
                         OnCallSpellingService)
 #endif
@@ -106,7 +106,7 @@ void SpellCheckMessageFilter::OnRespondDocumentMarkers(
       render_process_id_, markers);
 }
 
-#if !defined(USE_PLATFORM_SPELLCHECKER)
+#if !defined(USE_BROWSER_SPELLCHECKER)
 void SpellCheckMessageFilter::OnCallSpellingService(
     int route_id,
     int identifier,