Fix invalid DCHECK in EmbeddedApplicationRunner

content/common/mojo/embedded_application_runner.cc

Index: content/common/mojo/embedded_application_runner.cc
diff --git a/content/common/mojo/embedded_application_runner.cc b/content/common/mojo/embedded_application_runner.cc
index 2bbd45e5f9e19b4cb10210265e36423741bdca99..c1a0f8f583dea077e46bb4214f615c53a42bd51c 100644
--- a/content/common/mojo/embedded_application_runner.cc
+++ b/content/common/mojo/embedded_application_runner.cc
@@ -30,7 +30,6 @@ class EmbeddedApplicationRunner::Instance
         quit_task_runner_(base::ThreadTaskRunnerHandle::Get()),
         application_task_runner_(info.application_task_runner) {
     application_thread_checker_.DetachFromThread();
-
     if (!use_own_thread_ && !application_task_runner_)
       application_task_runner_ = base::ThreadTaskRunnerHandle::Get();
   }
@@ -43,6 +42,7 @@ class EmbeddedApplicationRunner::Instance
       thread_.reset(new base::Thread(name_));
       thread_->Start();
       application_task_runner_ = thread_->task_runner();
+      application_thread_checker_.DetachFromThread();
     }
 
     DCHECK(application_task_runner_);