[Chromecast] Add connectivity checking for Chromecast.

chromecast/browser/cast_browser_main_parts.cc

Index: chromecast/browser/cast_browser_main_parts.cc
diff --git a/chromecast/browser/cast_browser_main_parts.cc b/chromecast/browser/cast_browser_main_parts.cc
index 100bea2f63cfe28e60602c8dd40958045d8294b2..87a2dcf7fc459575ae8857426703b9fd68f02861 100644
--- a/chromecast/browser/cast_browser_main_parts.cc
+++ b/chromecast/browser/cast_browser_main_parts.cc
@@ -28,6 +28,7 @@
 #include "chromecast/common/cast_paths.h"
 #include "chromecast/common/chromecast_switches.h"
 #include "chromecast/common/platform_client_auth.h"
+#include "chromecast/net/connectivity_checker.h"
 #include "chromecast/net/network_change_notifier_cast.h"
 #include "chromecast/net/network_change_notifier_factory_cast.h"
 #include "content/public/browser/browser_thread.h"
@@ -208,6 +209,11 @@ void CastBrowserMainParts::PreMainMessageLoopRun() {
     ::media::SetBrowserCdmFactory(new media::CastBrowserCdmFactory);
 #endif  // !defined(OS_ANDROID)
 
+  cast_browser_process_->SetConnectivityChecker(
+      make_scoped_refptr(new ConnectivityChecker(
+          content::BrowserThread::GetMessageLoopProxyForThread(
+              content::BrowserThread::FILE))));
+
   url_request_context_factory_->InitializeOnUIThread();
 
   cast_browser_process_->SetBrowserContext(