NavigatorContentUtils should be a supplement of Navigator

third_party/WebKit/Source/web/ChromeClientImpl.cpp

Index: third_party/WebKit/Source/web/ChromeClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ChromeClientImpl.cpp b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
index e5712bb613f807a4273fbe62cd9d4562896d7ea6..b0972e570971d3e0f0d57bab329e6dc85504e44d 100644
--- a/third_party/WebKit/Source/web/ChromeClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
@@ -57,6 +57,7 @@
 #include "modules/audio_output_devices/AudioOutputDeviceClient.h"
 #include "modules/installedapp/InstalledAppController.h"
 #include "modules/mediastream/UserMediaController.h"
+#include "modules/navigatorcontentutils/NavigatorContentUtils.h"
 #include "modules/presentation/PresentationController.h"
 #include "modules/push_messaging/PushController.h"
 #include "modules/screen_orientation/ScreenOrientationControllerImpl.h"
@@ -1155,8 +1156,9 @@ void ChromeClientImpl::installSupplements(LocalFrame& frame) {
                      UserMediaClientImpl::create(client->userMediaClient()));
   provideIndexedDBClientTo(frame, IndexedDBClientImpl::create(frame));
   provideLocalFileSystemTo(frame, LocalFileSystemClient::create());
-  provideNavigatorContentUtilsTo(
-      frame, NavigatorContentUtilsClientImpl::create(webFrame));
+  NavigatorContentUtils::provideNavigatorContentUtilsTo(
+      *frame.domWindow()->navigator(),

[sof, 2017/01/13 07:40:30]

this will now instantiate a Navigator earlier (and always), but i suppose it
isn't too heavy.

+      NavigatorContentUtilsClientImpl::create(webFrame));
 
   ScreenOrientationControllerImpl::provideTo(
       frame, client->webScreenOrientationClient());