Pass navigator.connect calls through to the browser process.

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index 46fba8446e0872bd8e5907db289569e7b8d0fde0..61d50e7af93cc00fba6f9b3df89619e9a9d75b2d 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -34,6 +34,7 @@
 #include "content/child/child_thread.h"
 #include "content/child/content_child_helpers.h"
 #include "content/child/geofencing/web_geofencing_provider_impl.h"
+#include "content/child/navigator_connect/navigator_connect_provider.h"
 #include "content/child/notifications/notification_dispatcher.h"
 #include "content/child/notifications/notification_manager.h"
 #include "content/child/push_messaging/push_dispatcher.h"
@@ -1080,6 +1081,15 @@ blink::WebPushProvider* BlinkPlatformImpl::pushProvider() {
                                               push_dispatcher_.get());
 }
 
+blink::WebNavigatorConnectProvider*
+BlinkPlatformImpl::navigatorConnectProvider() {
+  if (!thread_safe_sender_.get())
+    return nullptr;
+
+  return NavigatorConnectProvider::ThreadSpecificInstance(
+      thread_safe_sender_.get(), main_thread_task_runner_);
+}
+
 WebThemeEngine* BlinkPlatformImpl::themeEngine() {
   return &native_theme_engine_;
 }