WIP: The tracing service prototype

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 98eb42ddfab751b28d3a3f0e90cef138eae461b9..d5cd794b77b64a4979f73c1e9f5401003afac243 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -14,8 +14,10 @@
 #include "build/build_config.h"
 #include "content/browser/browser_process_sub_thread.h"
 #include "content/public/browser/browser_main_runner.h"
+#include "content/public/common/service_names.mojom.h"
 #include "media/audio/audio_manager.h"
 #include "services/resource_coordinator/memory/coordinator/coordinator_impl.h"
+#include "services/resource_coordinator/tracing/coordinator_impl.h"
 
 #if defined(USE_AURA)
 namespace aura {
@@ -316,6 +318,8 @@ class CONTENT_EXPORT BrowserMainLoop {
   std::unique_ptr<discardable_memory::DiscardableSharedMemoryManager>
       discardable_shared_memory_manager_;
   scoped_refptr<SaveFileManager> save_file_manager_;
+  std::unique_ptr<resource_coordinator::tracing::CoordinatorImpl>
+      tracing_coordinator_;
   std::unique_ptr<memory_instrumentation::CoordinatorImpl>
       memory_instrumentation_coordinator_;