Revert of Remove post_launch_on_client_thread_called

content/browser/child_process_launcher_helper.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_CHILD_PROCESS_LAUNCHER_HELPER_H_
 #define CONTENT_BROWSER_CHILD_PROCESS_LAUNCHER_HELPER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 104 matching lines @@
       int* launch_result);
 
   // Called right after the process has been launched, whether it was created
   // yet or not.
   // Platform specific.
   void AfterLaunchOnLauncherThread(
       const ChildProcessLauncherHelper::Process& process,
       const base::LaunchOptions& options);
 
   // Called once the process has been created, successfully or not.
+  // If |post_launch_on_client_thread_called| is false,
+  // this calls PostLaunchOnClientThread on the client thread.
   void PostLaunchOnLauncherThread(ChildProcessLauncherHelper::Process process,
-                                  int launch_result);
+                                  int launch_result,
+                                  bool post_launch_on_client_thread_called);
 
-  // Posted by PostLaunchOnLauncherThread onto the client thread.
+  // Note that this could be called before PostLaunchOnLauncherThread() is
+  // called.
   void PostLaunchOnClientThread(ChildProcessLauncherHelper::Process process,
                                 int error_code);
 
   int client_thread_id() const { return client_thread_id_; }
 
   // Returns the termination status and sets |exit_code| if non null.
   // See ChildProcessLauncher::GetChildTerminationStatus for more info.
   base::TerminationStatus GetTerminationStatus(
       const ChildProcessLauncherHelper::Process& process,
       bool known_dead,
@@ skipping 61 matching lines @@
 #if defined(OS_ANDROID)
   base::android::ScopedJavaGlobalRef<jobject> java_peer_;
 #endif
 };
 
 }  // namespace internal
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CHILD_PROCESS_LAUNCHER_HELPER_H_