Removed and replaced outdated mac-specific files and references.

chrome/renderer/spellchecker/spellcheck.h

Index: chrome/renderer/spellchecker/spellcheck.h
diff --git a/chrome/renderer/spellchecker/spellcheck.h b/chrome/renderer/spellchecker/spellcheck.h
index 714d4b4bb083a557c2a03a30ad108a9bbeae56dd..c158c7f98093bea75c29c999e8854f5d63afc95d 100644
--- a/chrome/renderer/spellchecker/spellcheck.h
+++ b/chrome/renderer/spellchecker/spellcheck.h
@@ -94,7 +94,7 @@ class SpellCheck : public content::RenderProcessObserver,
 
   // Requests to spellcheck the specified text in the background. This function
   // posts a background task and calls SpellCheckParagraph() in the task.
-#if !defined (OS_MACOSX)
+#if !defined (USE_BROWSER_SPELLCHECKER)
   void RequestTextChecking(const base::string16& text,
                            blink::WebTextCheckingCompletion* completion);
 #endif
@@ -131,7 +131,7 @@ class SpellCheck : public content::RenderProcessObserver,
   void OnEnableSpellCheck(bool enable);
   void OnRequestDocumentMarkers();
 
-#if !defined (OS_MACOSX)
+#if !defined (USE_BROWSER_SPELLCHECKER)
   // Posts delayed spellcheck task and clear it if any.
   // Takes ownership of |request|.
   void PostDelayedSpellCheckTask(SpellcheckRequest* request);