Patch 3: Added files for platform-based spellcheck.

chrome/renderer/spellchecker/hunspell_engine.cc

Index: chrome/renderer/spellchecker/hunspell_engine.cc
diff --git a/chrome/renderer/spellchecker/hunspell_engine.cc b/chrome/renderer/spellchecker/hunspell_engine.cc
index b37f227a968cdf1f524d2bb3f15f35ecca58d8a0..f50f8606395d77c84fbf8106170b03e0e09df115 100644
--- a/chrome/renderer/spellchecker/hunspell_engine.cc
+++ b/chrome/renderer/spellchecker/hunspell_engine.cc
@@ -31,7 +31,7 @@ namespace {
                 "MaxSuggestLen too long");
 }  // namespace
 
-#if !defined(OS_MACOSX)
+#if !defined(USE_PLATFORM_SPELLCHECKER)
 SpellingEngine* CreateNativeSpellingEngine() {
   return new HunspellEngine();
 }