Revert of Add thread checking to RunLoop, deprecate MessageLoopRunner.

content/public/test/test_launcher.h

Index: content/public/test/test_launcher.h
diff --git a/content/public/test/test_launcher.h b/content/public/test/test_launcher.h
index b58f9b75d78973ff3c38e424d1a1eac5dcca5675..522c5fdfdaa90b6b7608aa35641cb4c0a1fabbaf 100644
--- a/content/public/test/test_launcher.h
+++ b/content/public/test/test_launcher.h
@@ -14,6 +14,7 @@
 namespace base {
 class CommandLine;
 class FilePath;
+class RunLoop;
 }
 
 namespace content {
@@ -46,6 +47,8 @@
   virtual bool AdjustChildProcessCommandLine(
       base::CommandLine* command_line,
       const base::FilePath& temp_data_dir) = 0;
+  virtual void PreRunMessageLoop(base::RunLoop* run_loop) {}
+  virtual void PostRunMessageLoop() {}
   virtual ContentMainDelegate* CreateContentMainDelegate() = 0;
 
   // Called prior to running each test. The delegate may alter the CommandLine