Make TracingImpl take a Shell* and args, instead of an ApplicationImpl*.

services/gfx/compositor/compositor_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 "services/gfx/compositor/compositor_app.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "mojo/application/application_runner_chromium.h"
@@ skipping 11 matching lines @@
 
 void CompositorApp::Initialize(mojo::ApplicationImpl* app_impl) {
   app_impl_ = app_impl;
 
   auto command_line = base::CommandLine::ForCurrentProcess();
   command_line->InitFromArgv(app_impl_->args());
   logging::LoggingSettings settings;
   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
   logging::InitLogging(settings);
 
-  tracing_.Initialize(app_impl_);
+  tracing_.Initialize(app_impl_->shell(), &app_impl_->args());
 
   engine_.reset(new CompositorEngine());
 }
 
 bool CompositorApp::ConfigureIncomingConnection(
     mojo::ServiceProviderImpl* service_provider_impl) {
   service_provider_impl->AddService<mojo::gfx::composition::Compositor>(
       [this](const mojo::ConnectionContext& connection_context,
              mojo::InterfaceRequest<mojo::gfx::composition::Compositor>
                  compositor_request) {
         compositor_bindings_.AddBinding(new CompositorImpl(engine_.get()),
                                         compositor_request.Pass());
       });
   return true;
 }
 
 }  // namespace compositor