Move MessageLoop to base namespace.

chrome/browser/importer/firefox_importer_unittest_utils.h

Index: chrome/browser/importer/firefox_importer_unittest_utils.h
diff --git a/chrome/browser/importer/firefox_importer_unittest_utils.h b/chrome/browser/importer/firefox_importer_unittest_utils.h
index 1d6cc699781fbf87cc25d50eae23deb264d52b65..480b09e7349c55e4384b466ee72406faf60a3692 100644
--- a/chrome/browser/importer/firefox_importer_unittest_utils.h
+++ b/chrome/browser/importer/firefox_importer_unittest_utils.h
@@ -11,10 +11,14 @@
 #include "chrome/browser/importer/nss_decryptor.h"
 
 class FFDecryptorServerChannelListener;
+
+namespace base {
+class MessageLoopForIO;
+}
+
 namespace IPC {
-  class Channel;
+class Channel;
 }  // namespace IPC
-class MessageLoopForIO;
 
 // On OS X NSSDecryptor needs to run in a separate process. To allow us to use
 // the same unit test on all platforms we use a proxy class which spawns a
@@ -52,7 +56,7 @@ class FFUnitTestDecryptorProxy {
   base::ProcessHandle child_process_;
   scoped_ptr<IPC::Channel> channel_;
   scoped_ptr<FFDecryptorServerChannelListener> listener_;
-  scoped_ptr<MessageLoopForIO> message_loop_;
+  scoped_ptr<base::MessageLoopForIO> message_loop_;
 #else
   NSSDecryptor decryptor_;
 #endif  // !OS_MACOSX