chrome_frame: Use base::MessageLoop.

chrome_frame/chrome_frame_automation.cc

Index: chrome_frame/chrome_frame_automation.cc
diff --git a/chrome_frame/chrome_frame_automation.cc b/chrome_frame/chrome_frame_automation.cc
index 6f1e7f047fc64044e8aa6da8432f3758a5b7cfa7..7304c28cc3f3b6e921a7a9dc911aa5c49181dd88 100644
--- a/chrome_frame/chrome_frame_automation.cc
+++ b/chrome_frame/chrome_frame_automation.cc
@@ -225,7 +225,7 @@ AutomationProxyCacheEntry::~AutomationProxyCacheEntry() {
   // The AutomationProxy class uses the SyncChannel which assumes the existence
   // of a MessageLoop instance.
   // We leak the AutomationProxy pointer here to avoid a crash.
-  if (MessageLoop::current() == NULL) {
+  if (base::MessageLoop::current() == NULL) {
     proxy_.release();
   }
 }