Fix crash on launch when remoting lab is turned on on Windows.

chrome/browser/service/service_process_control.cc

Index: chrome/browser/service/service_process_control.cc
diff --git a/chrome/browser/service/service_process_control.cc b/chrome/browser/service/service_process_control.cc
index acccbda682fa21742223ba926fb919730e049fcd..97975efdfaf5fe96676f31d5855966fe652fc540 100644
--- a/chrome/browser/service/service_process_control.cc
+++ b/chrome/browser/service/service_process_control.cc
@@ -135,6 +135,14 @@ void ServiceProcessControl::Launch(Task* task) {
     return;
   }
 
+  // Prevent quick calls to Launch in succession from causing a crash.
+  // TODO(scottbyer) - ServiceProcessControl launch task callback code needs to
+  // be enhanced to deal with this properly.  See
+  // http://code.google.com/p/chromium/issues/detail?id=58802
+  if (launcher_) {
+    return;
+  }
+
   // A service process should have a different mechanism for starting, but now
   // we start it as if it is a child process.
   FilePath exe_path = ChildProcessHost::GetChildPath(true);