Move some basic early process init into Service Manager

content/app/content_main.cc

Index: content/app/content_main.cc
diff --git a/content/app/content_main.cc b/content/app/content_main.cc
index b983bf8191d9d1e59e27d2a9250569d8fc793751..ef922a6541edb825b260ac1df77437ae99836d94 100644
--- a/content/app/content_main.cc
+++ b/content/app/content_main.cc
@@ -6,22 +6,52 @@
 
 #include <memory>
 
+#include "base/macros.h"
 #include "content/public/app/content_main_runner.h"
+#include "services/service_manager/embedder/main.h"
+#include "services/service_manager/embedder/main_delegate.h"
 
 namespace content {
 
-int ContentMain(const ContentMainParams& params) {
-  std::unique_ptr<ContentMainRunner> main_runner(ContentMainRunner::Create());
+namespace {
+
+class ContentServiceManagerMainDelegate : public service_manager::MainDelegate {
+ public:
+  explicit ContentServiceManagerMainDelegate(const ContentMainParams& params)
+      : content_main_params_(params),
+        main_runner_(ContentMainRunner::Create()) {}
+  ~ContentServiceManagerMainDelegate() override {}
+
+  // service_manager::MainDelegate:
+  bool Initialize(const InitializeParams& params, int* exit_code) override {
+#if defined(OS_MACOSX)
+    content_main_params_.autorelease_pool = params.autorelease_pool;
+#endif
+    *exit_code = main_runner_->Initialize(content_main_params_);
+    return *exit_code < 0;
+  }
 
-  int exit_code = main_runner->Initialize(params);
-  if (exit_code >= 0)
-    return exit_code;
+  int Run() override { return main_runner_->Run(); }
 
-  exit_code = main_runner->Run();
+  void ShutDown() override { main_runner_->Shutdown(); }
 
-  main_runner->Shutdown();
+ private:
+  ContentMainParams content_main_params_;
+  std::unique_ptr<ContentMainRunner> main_runner_;
 
-  return exit_code;
+  DISALLOW_COPY_AND_ASSIGN(ContentServiceManagerMainDelegate);
+};
+
+}  // namespace
+
+int ContentMain(const ContentMainParams& params) {
+  ContentServiceManagerMainDelegate delegate(params);
+  service_manager::MainParams main_params(&delegate);
+#if defined(OS_POSIX) && !defined(OS_ANDROID)
+  main_params.argc = params.argc;
+  main_params.argv = params.argv;
+#endif
+  return service_manager::Main(main_params);
 }
 
 }  // namespace content