content: Use base::MessageLoop.

BUG=236029
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Review URL: https://chromiumcodereview.appspot.com/14335017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198316 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/plugin_loader_posix_unittest.cc b/content/browser/plugin_loader_posix_unittest.cc
index 6944384..c623892 100644
--- a/content/browser/plugin_loader_posix_unittest.cc
+++ b/content/browser/plugin_loader_posix_unittest.cc
@@ -79,7 +79,7 @@
     PluginServiceImpl::GetInstance()->Init();
   }
 
-  MessageLoop* message_loop() { return &message_loop_; }
+  base::MessageLoop* message_loop() { return &message_loop_; }
   MockPluginLoaderPosix* plugin_loader() { return plugin_loader_.get(); }
 
   void AddThreePlugins() {
@@ -97,7 +97,7 @@
  private:
   base::ShadowingAtExitManager at_exit_manager_;  // Destroys PluginService.
 
-  MessageLoopForIO message_loop_;
+  base::MessageLoopForIO message_loop_;
   BrowserThreadImpl file_thread_;
   BrowserThreadImpl io_thread_;