Third patch in getting rid of caching MessageLoop pointers and always using C...

chrome/browser/renderer_host/browser_render_process_host.cc

Index: chrome/browser/renderer_host/browser_render_process_host.cc
===================================================================
--- chrome/browser/renderer_host/browser_render_process_host.cc	(revision 30650)
+++ chrome/browser/renderer_host/browser_render_process_host.cc	(working copy)
@@ -404,11 +404,11 @@
 }
 
 void BrowserRenderProcessHost::AddWord(const string16& word) {
-  base::Thread* io_thread = g_browser_process->io_thread();
   SpellChecker* spellchecker = profile()->GetSpellChecker();
   if (spellchecker) {
-    io_thread->message_loop()->PostTask(FROM_HERE, NewRunnableMethod(
-        spellchecker, &SpellChecker::AddWord, word));
+    ChromeThread::PostTask(
+        ChromeThread::IO, FROM_HERE,
+        NewRunnableMethod(spellchecker, &SpellChecker::AddWord, word));
   }
 }