Replace DOMWindowProperty in Navigator supplements with ContextClient

third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp

Index: third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp
diff --git a/third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp b/third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp
index 33cae5d175d7867981074c4d57e5865dd4411e5f..74dbda37b5d216e237ed8f79428bf9e04954986b 100644
--- a/third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp
+++ b/third_party/WebKit/Source/modules/beacon/NavigatorBeacon.cpp
@@ -21,12 +21,12 @@
 namespace blink {
 
 NavigatorBeacon::NavigatorBeacon(Navigator& navigator)
-    : DOMWindowProperty(navigator.frame()), m_transmittedBytes(0) {}
+    : ContextClient(navigator.frame()), m_transmittedBytes(0) {}
 
 NavigatorBeacon::~NavigatorBeacon() {}
 
 DEFINE_TRACE(NavigatorBeacon) {
-  DOMWindowProperty::trace(visitor);
+  ContextClient::trace(visitor);
   Supplement<Navigator>::trace(visitor);
 }