Delete the tracing service

components/font_service/font_service_app.cc

 // Copyright 2015 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.
 
 #include "components/font_service/font_service_app.h"
 
 #include <utility>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
@@ skipping 27 matching lines @@
 }  // namespace
 
 namespace font_service {
 
 FontServiceApp::FontServiceApp() {
   registry_.AddInterface(this);
 }
 
 FontServiceApp::~FontServiceApp() {}
 
-void FontServiceApp::OnStart() {
-  tracing_.Initialize(context()->connector(), context()->identity().name());
-}
+void FontServiceApp::OnStart() {}
 
 void FontServiceApp::OnBindInterface(
     const service_manager::ServiceInfo& source_info,
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle interface_pipe) {
   registry_.BindInterface(source_info.identity, interface_name,
                           std::move(interface_pipe));
 }
 
 void FontServiceApp::Create(
@@ skipping 57 matching lines @@
   int count = paths_.size();
   for (int i = 0; i < count; ++i) {
     if (path == paths_[i])
       return i;
   }
   paths_.emplace_back(path);
   return count;
 }
 
 }  // namespace font_service