[Chromecast] Add proxy server support to chromecast

chromecast/browser/cast_browser_process.cc

 // 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/browser/cast_browser_process.h"
 
+#include <string>
 #include <utility>
 
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "chromecast/base/metrics/cast_metrics_helper.h"
 #include "chromecast/browser/cast_browser_context.h"
 #include "chromecast/browser/cast_resource_dispatcher_host_delegate.h"
 #include "chromecast/browser/devtools/remote_debugging_server.h"
 #include "chromecast/browser/metrics/cast_metrics_service_client.h"
 #include "chromecast/net/connectivity_checker.h"
 #include "chromecast/service/cast_service.h"
 #include "components/prefs/pref_service.h"
+#include "net/proxy/proxy_config.h"
 
 #if defined(OS_ANDROID)
 #include "components/crash/content/browser/crash_dump_manager_android.h"
 #endif  // defined(OS_ANDROID)
 
 #if defined(USE_AURA)
 #include "chromecast/graphics/cast_screen.h"
 #endif  // defined(USE_AURA)
 
 namespace chromecast {
 namespace shell {
 
 namespace {
 CastBrowserProcess* g_instance = NULL;
 }  // namespace
 
 // static
 CastBrowserProcess* CastBrowserProcess::GetInstance() {
   DCHECK(g_instance);
   return g_instance;
 }
 
 CastBrowserProcess::CastBrowserProcess()
     : cast_content_browser_client_(nullptr),
       net_log_(nullptr) {
   DCHECK(!g_instance);
+
   g_instance = this;
 }
 
 CastBrowserProcess::~CastBrowserProcess() {
   DCHECK_EQ(g_instance, this);
   if (pref_service_)
     pref_service_->CommitPendingWrite();
   g_instance = NULL;
 }
 
@@ skipping 32 matching lines @@
 void CastBrowserProcess::SetMetricsServiceClient(
     std::unique_ptr<metrics::CastMetricsServiceClient> metrics_service_client) {
   DCHECK(!metrics_service_client_);
   metrics_service_client_.swap(metrics_service_client);
 }
 
 void CastBrowserProcess::SetPrefService(
     std::unique_ptr<PrefService> pref_service) {
   DCHECK(!pref_service_);
   pref_service_.swap(pref_service);
+  std::string proxy_server = pref_service_->GetString("proxy-server");

[almasrymina, 2017/01/25 02:52:56]

the string constants are defined in chromecast/internal/base/base_prefs.h, which
I cannot include here because of dependency restrictions. Please advise.

[almasrymina, 2017/01/25 02:52:56]

I'm not too sure about this part. Essentially I use the SetPrefService method to
initialize the proxy_config param, since the proxy config needs to be read from
the pref service.

[wzhong, 2017/01/25 03:03:45]

In ChromecastSevice, you might load preference and update proxy_config by 
shell::CastBrowserProcess::GetInstance()->proxy_config()

+
+  std::string proxy_bypass = pref_service_->GetString("proxy-bypass-list");
+
+  LOG(INFO) << "Setting proxy-server: " << proxy_server;
+  LOG(INFO) << "Setting proxy-bypass-list: " << proxy_bypass;
+
+  proxy_config_.reset(new net::ProxyConfig());
+
+  proxy_config_->proxy_rules().ParseFromString(proxy_server);
+  proxy_config_->proxy_rules().bypass_rules.ParseFromString(proxy_bypass);
 }
 
 void CastBrowserProcess::SetRemoteDebuggingServer(
     std::unique_ptr<RemoteDebuggingServer> remote_debugging_server) {
   DCHECK(!remote_debugging_server_);
   remote_debugging_server_.swap(remote_debugging_server);
 }
 
 void CastBrowserProcess::SetResourceDispatcherHostDelegate(
     std::unique_ptr<CastResourceDispatcherHostDelegate> delegate) {
   DCHECK(!resource_dispatcher_host_delegate_);
   resource_dispatcher_host_delegate_.swap(delegate);
 }
 
 #if defined(OS_ANDROID)
 void CastBrowserProcess::SetCrashDumpManager(
     std::unique_ptr<breakpad::CrashDumpManager> crash_dump_manager) {
   DCHECK(!crash_dump_manager_);
   crash_dump_manager_.swap(crash_dump_manager);
 }
 #endif  // defined(OS_ANDROID)
 
 void CastBrowserProcess::SetConnectivityChecker(
     scoped_refptr<ConnectivityChecker> connectivity_checker) {
   DCHECK(!connectivity_checker_);
   connectivity_checker_.swap(connectivity_checker);
 }
 
+net::ProxyConfig* CastBrowserProcess::proxy_config() {
+  DCHECK(proxy_config_->is_valid());
+  return proxy_config_.get();
+}
+
 void CastBrowserProcess::SetNetLog(net::NetLog* net_log) {
   DCHECK(!net_log_);
   net_log_ = net_log;
 }
 
 }  // namespace shell
 }  // namespace chromecast