Get rid of {Run,Terminate}MainApplication(), and more ApplicationDelegate conversion.

services/asset_bundle/main.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 "base/macros.h"
 #include "base/threading/sequenced_worker_pool.h"
+#include "mojo/environment/scoped_chromium_init.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_impl_base.h"
 #include "mojo/public/cpp/application/run_application.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
 #include "services/asset_bundle/asset_unpacker_impl.h"
 
 namespace mojo {
 namespace asset_bundle {
 
 class AssetBundleApp : public ApplicationImplBase {
  public:
   AssetBundleApp() {}
   ~AssetBundleApp() override {}
 
  private:
   // |ApplicationImplBase| override:
   bool OnAcceptConnection(ServiceProviderImpl* service_provider_impl) override {
     service_provider_impl->AddService<AssetUnpacker>(
         [this](const ConnectionContext& connection_context,
                InterfaceRequest<AssetUnpacker> asset_unpacker_request) {
           // Lazily initialize |sequenced_worker_pool_|. (We can't create it in
-          // the constructor, since AtExitManager is only created in
-          // mojo::RunMainApplication().)
+          // the constructor, since the message loop (which implies that there's
+          // a current SingleThreadTaskRunner) is only created in
+          // mojo::RunApplication().)
           if (!sequenced_worker_pool_) {
             // TODO(vtl): What's the "right" way to choose the maximum number of
             // threads?
             sequenced_worker_pool_ =
                 new base::SequencedWorkerPool(4, "AssetBundleWorker");
           }
 
           new AssetUnpackerImpl(
               asset_unpacker_request.Pass(),
               sequenced_worker_pool_->GetTaskRunnerWithShutdownBehavior(
                   base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
         });
     return true;
   }
 
   // We don't really need the "sequenced" part, but we need to be able to shut
   // down our worker pool.
   scoped_refptr<base::SequencedWorkerPool> sequenced_worker_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(AssetBundleApp);
 };
 
 }  // namespace asset_bundle
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle application_request) {
+  mojo::ScopedChromiumInit init;
   mojo::asset_bundle::AssetBundleApp asset_bundle_app;
-  return mojo::RunMainApplication(application_request, &asset_bundle_app);
+  return mojo::RunApplication(application_request, &asset_bundle_app);
 }