Reorganizes Chromecast code to better reflect functional dependencies.

chromecast/shell/browser/url_request_context_factory.cc

Index: chromecast/shell/browser/url_request_context_factory.cc
diff --git a/chromecast/shell/browser/url_request_context_factory.cc b/chromecast/shell/browser/url_request_context_factory.cc
deleted file mode 100644
index 070185589f1b3b7040dcbc28725e2691b9f701f2..0000000000000000000000000000000000000000
--- a/chromecast/shell/browser/url_request_context_factory.cc
+++ /dev/null
@@ -1,415 +0,0 @@
-// Copyright 2014 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 "chromecast/shell/browser/url_request_context_factory.h"
-
-#include "base/command_line.h"
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "base/path_service.h"
-#include "base/threading/worker_pool.h"
-#include "chromecast/shell/browser/cast_http_user_agent_settings.h"
-#include "chromecast/shell/browser/cast_network_delegate.h"
-#include "content/public/browser/browser_context.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/cookie_store_factory.h"
-#include "content/public/common/content_switches.h"
-#include "content/public/common/url_constants.h"
-#include "net/cert/cert_verifier.h"
-#include "net/cookies/cookie_store.h"
-#include "net/dns/host_resolver.h"
-#include "net/http/http_auth_handler_factory.h"
-#include "net/http/http_cache.h"
-#include "net/http/http_network_layer.h"
-#include "net/http/http_server_properties_impl.h"
-#include "net/http/http_stream_factory.h"
-#include "net/ocsp/nss_ocsp.h"
-#include "net/proxy/proxy_service.h"
-#include "net/socket/next_proto.h"
-#include "net/ssl/channel_id_service.h"
-#include "net/ssl/default_channel_id_store.h"
-#include "net/ssl/ssl_config_service_defaults.h"
-#include "net/url_request/data_protocol_handler.h"
-#include "net/url_request/file_protocol_handler.h"
-#include "net/url_request/url_request_context.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "net/url_request/url_request_intercepting_job_factory.h"
-#include "net/url_request/url_request_job_factory_impl.h"
-
-namespace chromecast {
-namespace shell {
-
-namespace {
-
-const char kCookieStoreFile[] = "Cookies";
-
-}  // namespace
-
-// Private classes to expose URLRequestContextGetter that call back to the
-// URLRequestContextFactory to create the URLRequestContext on demand.
-//
-// The URLRequestContextFactory::URLRequestContextGetter class is used for both
-// the system and media URLRequestCotnexts.
-class URLRequestContextFactory::URLRequestContextGetter
-    : public net::URLRequestContextGetter {
- public:
-  URLRequestContextGetter(URLRequestContextFactory* factory, bool is_media)
-      : is_media_(is_media),
-        factory_(factory) {
-  }
-
-  virtual net::URLRequestContext* GetURLRequestContext() override {
-    if (!request_context_) {
-      if (is_media_) {
-        request_context_.reset(factory_->CreateMediaRequestContext());
-      } else {
-        request_context_.reset(factory_->CreateSystemRequestContext());
-#if defined(USE_NSS)
-        // Set request context used by NSS for Crl requests.
-        net::SetURLRequestContextForNSSHttpIO(request_context_.get());
-#endif  // defined(USE_NSS)
-      }
-    }
-    return request_context_.get();
-  }
-
-  virtual scoped_refptr<base::SingleThreadTaskRunner>
-      GetNetworkTaskRunner() const override {
-    return content::BrowserThread::GetMessageLoopProxyForThread(
-        content::BrowserThread::IO);
-  }
-
- private:
-  virtual ~URLRequestContextGetter() {}
-
-  const bool is_media_;
-  URLRequestContextFactory* const factory_;
-  scoped_ptr<net::URLRequestContext> request_context_;
-
-  DISALLOW_COPY_AND_ASSIGN(URLRequestContextGetter);
-};
-
-// The URLRequestContextFactory::MainURLRequestContextGetter class is used for
-// the main URLRequestContext.
-class URLRequestContextFactory::MainURLRequestContextGetter
-    : public net::URLRequestContextGetter {
- public:
-  MainURLRequestContextGetter(
-      URLRequestContextFactory* factory,
-      content::BrowserContext* browser_context,
-      content::ProtocolHandlerMap* protocol_handlers,
-      content::URLRequestInterceptorScopedVector request_interceptors)
-      : browser_context_(browser_context),
-        factory_(factory),
-        request_interceptors_(request_interceptors.Pass()) {
-    std::swap(protocol_handlers_, *protocol_handlers);
-  }
-
-  virtual net::URLRequestContext* GetURLRequestContext() override {
-    if (!request_context_) {
-      request_context_.reset(factory_->CreateMainRequestContext(
-          browser_context_, &protocol_handlers_, request_interceptors_.Pass()));
-      protocol_handlers_.clear();
-    }
-    return request_context_.get();
-  }
-
-  virtual scoped_refptr<base::SingleThreadTaskRunner>
-      GetNetworkTaskRunner() const override {
-    return content::BrowserThread::GetMessageLoopProxyForThread(
-        content::BrowserThread::IO);
-  }
-
- private:
-  virtual ~MainURLRequestContextGetter() {}
-
-  content::BrowserContext* const browser_context_;
-  URLRequestContextFactory* const factory_;
-  content::ProtocolHandlerMap protocol_handlers_;
-  content::URLRequestInterceptorScopedVector request_interceptors_;
-  scoped_ptr<net::URLRequestContext> request_context_;
-
-  DISALLOW_COPY_AND_ASSIGN(MainURLRequestContextGetter);
-};
-
-URLRequestContextFactory::URLRequestContextFactory()
-    : app_network_delegate_(CastNetworkDelegate::Create()),
-      system_network_delegate_(CastNetworkDelegate::Create()),
-      system_dependencies_initialized_(false),
-      main_dependencies_initialized_(false),
-      media_dependencies_initialized_(false) {
-}
-
-URLRequestContextFactory::~URLRequestContextFactory() {
-}
-
-void URLRequestContextFactory::InitializeOnUIThread() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-  // Cast http user agent settings must be initialized in UI thread
-  // because it registers itself to pref notification observer which is not
-  // thread safe.
-  http_user_agent_settings_.reset(new CastHttpUserAgentSettings());
-
-  // Proxy config service should be initialized in UI thread, since
-  // ProxyConfigServiceDelegate on Android expects UI thread.
-  proxy_config_service_.reset(net::ProxyService::CreateSystemProxyConfigService(
-      content::BrowserThread::GetMessageLoopProxyForThread(
-          content::BrowserThread::IO),
-      content::BrowserThread::GetMessageLoopProxyForThread(
-          content::BrowserThread::FILE)));
-}
-
-net::URLRequestContextGetter* URLRequestContextFactory::CreateMainGetter(
-    content::BrowserContext* browser_context,
-    content::ProtocolHandlerMap* protocol_handlers,
-    content::URLRequestInterceptorScopedVector request_interceptors) {
-  DCHECK(!main_getter_.get())
-      << "Main URLRequestContextGetter already initialized";
-  main_getter_ = new MainURLRequestContextGetter(this,
-                                                 browser_context,
-                                                 protocol_handlers,
-                                                 request_interceptors.Pass());
-  return main_getter_.get();
-}
-
-net::URLRequestContextGetter* URLRequestContextFactory::GetMainGetter() {
-  CHECK(main_getter_.get());
-  return main_getter_.get();
-}
-
-net::URLRequestContextGetter* URLRequestContextFactory::GetSystemGetter() {
-  if (!system_getter_.get()) {
-    system_getter_ = new URLRequestContextGetter(this, false);
-  }
-  return system_getter_.get();
-}
-
-net::URLRequestContextGetter* URLRequestContextFactory::GetMediaGetter() {
-  if (!media_getter_.get()) {
-    media_getter_ = new URLRequestContextGetter(this, true);
-  }
-  return media_getter_.get();
-}
-
-void URLRequestContextFactory::InitializeSystemContextDependencies() {
-  if (system_dependencies_initialized_)
-    return;
-
-  host_resolver_ = net::HostResolver::CreateDefaultResolver(NULL);
-
-  // TODO(lcwu): http://crbug.com/392352. For performance and security reasons,
-  // a persistent (on-disk) HttpServerProperties and ChannelIDService might be
-  // desirable in the future.
-  channel_id_service_.reset(
-      new net::ChannelIDService(new net::DefaultChannelIDStore(NULL),
-                                base::WorkerPool::GetTaskRunner(true)));
-
-  cert_verifier_.reset(net::CertVerifier::CreateDefault());
-
-  ssl_config_service_ = new net::SSLConfigServiceDefaults;
-
-  transport_security_state_.reset(new net::TransportSecurityState());
-  http_auth_handler_factory_.reset(
-      net::HttpAuthHandlerFactory::CreateDefault(host_resolver_.get()));
-
-  http_server_properties_.reset(new net::HttpServerPropertiesImpl);
-
-  proxy_service_.reset(net::ProxyService::CreateUsingSystemProxyResolver(
-      proxy_config_service_.release(), 0, NULL));
-  system_dependencies_initialized_ = true;
-}
-
-void URLRequestContextFactory::InitializeMainContextDependencies(
-    net::HttpTransactionFactory* transaction_factory,
-    content::ProtocolHandlerMap* protocol_handlers,
-    content::URLRequestInterceptorScopedVector request_interceptors) {
-  if (main_dependencies_initialized_)
-    return;
-
-  main_transaction_factory_.reset(transaction_factory);
-  scoped_ptr<net::URLRequestJobFactoryImpl> job_factory(
-      new net::URLRequestJobFactoryImpl());
-  // Keep ProtocolHandlers added in sync with
-  // CastContentBrowserClient::IsHandledURL().
-  bool set_protocol = false;
-  for (content::ProtocolHandlerMap::iterator it = protocol_handlers->begin();
-       it != protocol_handlers->end();
-       ++it) {
-    set_protocol = job_factory->SetProtocolHandler(
-        it->first, it->second.release());
-    DCHECK(set_protocol);
-  }
-  set_protocol = job_factory->SetProtocolHandler(
-      url::kDataScheme,
-      new net::DataProtocolHandler);
-  DCHECK(set_protocol);
-#if defined(OS_ANDROID)
-  set_protocol = job_factory->SetProtocolHandler(
-      url::kFileScheme,
-      new net::FileProtocolHandler(
-          content::BrowserThread::GetBlockingPool()->
-              GetTaskRunnerWithShutdownBehavior(
-                  base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
-  DCHECK(set_protocol);
-#endif  // defined(OS_ANDROID)
-
-  // Set up interceptors in the reverse order.
-  scoped_ptr<net::URLRequestJobFactory> top_job_factory =
-      job_factory.PassAs<net::URLRequestJobFactory>();
-  for (content::URLRequestInterceptorScopedVector::reverse_iterator i =
-           request_interceptors.rbegin();
-       i != request_interceptors.rend();
-       ++i) {
-    top_job_factory.reset(new net::URLRequestInterceptingJobFactory(
-        top_job_factory.Pass(), make_scoped_ptr(*i)));
-  }
-  request_interceptors.weak_clear();
-
-  main_job_factory_.reset(top_job_factory.release());
-
-  main_dependencies_initialized_ = true;
-}
-
-void URLRequestContextFactory::InitializeMediaContextDependencies(
-    net::HttpTransactionFactory* transaction_factory) {
-  if (media_dependencies_initialized_)
-    return;
-
-  media_transaction_factory_.reset(transaction_factory);
-  media_dependencies_initialized_ = true;
-}
-
-void URLRequestContextFactory::PopulateNetworkSessionParams(
-    bool ignore_certificate_errors,
-    net::HttpNetworkSession::Params* params) {
-  params->host_resolver = host_resolver_.get();
-  params->cert_verifier = cert_verifier_.get();
-  params->channel_id_service = channel_id_service_.get();
-  params->ssl_config_service = ssl_config_service_.get();
-  params->transport_security_state = transport_security_state_.get();
-  params->http_auth_handler_factory = http_auth_handler_factory_.get();
-  params->http_server_properties = http_server_properties_->GetWeakPtr();
-  params->ignore_certificate_errors = ignore_certificate_errors;
-  params->proxy_service = proxy_service_.get();
-
-  // TODO(lcwu): http://crbug.com/329681. Remove this once spdy is enabled
-  // by default at the content level.
-  params->next_protos = net::NextProtosSpdy31();
-  params->use_alternate_protocols = true;
-}
-
-net::URLRequestContext* URLRequestContextFactory::CreateSystemRequestContext() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  InitializeSystemContextDependencies();
-  net::HttpNetworkSession::Params system_params;
-  PopulateNetworkSessionParams(false, &system_params);
-  system_transaction_factory_.reset(new net::HttpNetworkLayer(
-      new net::HttpNetworkSession(system_params)));
-  system_job_factory_.reset(new net::URLRequestJobFactoryImpl());
-
-  net::URLRequestContext* system_context = new net::URLRequestContext();
-  system_context->set_host_resolver(host_resolver_.get());
-  system_context->set_channel_id_service(channel_id_service_.get());
-  system_context->set_cert_verifier(cert_verifier_.get());
-  system_context->set_proxy_service(proxy_service_.get());
-  system_context->set_ssl_config_service(ssl_config_service_.get());
-  system_context->set_transport_security_state(
-      transport_security_state_.get());
-  system_context->set_http_auth_handler_factory(
-      http_auth_handler_factory_.get());
-  system_context->set_http_server_properties(
-      http_server_properties_->GetWeakPtr());
-  system_context->set_http_transaction_factory(
-      system_transaction_factory_.get());
-  system_context->set_http_user_agent_settings(
-      http_user_agent_settings_.get());
-  system_context->set_job_factory(system_job_factory_.get());
-  system_context->set_cookie_store(
-      content::CreateCookieStore(content::CookieStoreConfig()));
-  system_context->set_network_delegate(system_network_delegate_.get());
-  return system_context;
-}
-
-net::URLRequestContext* URLRequestContextFactory::CreateMediaRequestContext() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  DCHECK(main_getter_.get())
-      << "Getting MediaRequestContext before MainRequestContext";
-  net::URLRequestContext* main_context = main_getter_->GetURLRequestContext();
-
-  // Set non caching backend.
-  net::HttpNetworkSession* main_session =
-      main_transaction_factory_->GetSession();
-  InitializeMediaContextDependencies(
-      new net::HttpNetworkLayer(main_session));
-
-  net::URLRequestContext* media_context = new net::URLRequestContext();
-  media_context->CopyFrom(main_context);
-  media_context->set_http_transaction_factory(
-      media_transaction_factory_.get());
-  return media_context;
-}
-
-net::URLRequestContext* URLRequestContextFactory::CreateMainRequestContext(
-    content::BrowserContext* browser_context,
-    content::ProtocolHandlerMap* protocol_handlers,
-    content::URLRequestInterceptorScopedVector request_interceptors) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-  InitializeSystemContextDependencies();
-
-  net::HttpCache::BackendFactory* main_backend =
-      net::HttpCache::DefaultBackend::InMemory(16 * 1024 * 1024);
-
-  bool ignore_certificate_errors = false;
-  CommandLine* cmd_line = CommandLine::ForCurrentProcess();
-  if (cmd_line->HasSwitch(switches::kIgnoreCertificateErrors)) {
-    ignore_certificate_errors = true;
-  }
-  net::HttpNetworkSession::Params network_session_params;
-  PopulateNetworkSessionParams(ignore_certificate_errors,
-                               &network_session_params);
-  InitializeMainContextDependencies(
-      new net::HttpCache(network_session_params, main_backend),
-      protocol_handlers,
-      request_interceptors.Pass());
-
-  content::CookieStoreConfig cookie_config(
-      browser_context->GetPath().Append(kCookieStoreFile),
-      content::CookieStoreConfig::PERSISTANT_SESSION_COOKIES,
-      NULL, NULL);
-  cookie_config.background_task_runner =
-      scoped_refptr<base::SequencedTaskRunner>();
-  scoped_refptr<net::CookieStore> cookie_store =
-      content::CreateCookieStore(cookie_config);
-
-  net::URLRequestContext* main_context = new net::URLRequestContext();
-  main_context->set_host_resolver(host_resolver_.get());
-  main_context->set_channel_id_service(channel_id_service_.get());
-  main_context->set_cert_verifier(cert_verifier_.get());
-  main_context->set_proxy_service(proxy_service_.get());
-  main_context->set_ssl_config_service(ssl_config_service_.get());
-  main_context->set_transport_security_state(transport_security_state_.get());
-  main_context->set_http_auth_handler_factory(
-      http_auth_handler_factory_.get());
-  main_context->set_http_server_properties(
-      http_server_properties_->GetWeakPtr());
-  main_context->set_cookie_store(cookie_store.get());
-  main_context->set_http_user_agent_settings(
-      http_user_agent_settings_.get());
-
-  main_context->set_http_transaction_factory(
-      main_transaction_factory_.get());
-  main_context->set_job_factory(main_job_factory_.get());
-  main_context->set_network_delegate(app_network_delegate_.get());
-  return main_context;
-}
-
-void URLRequestContextFactory::InitializeNetworkDelegates() {
-  app_network_delegate_->Initialize(false);
-  LOG(INFO) << "Initialized app network delegate.";
-  system_network_delegate_->Initialize(false);
-  LOG(INFO) << "Initialized system network delegate.";
-}
-
-}  // namespace shell
-}  // namespace chromecast