Revert of Move ObjectContentType entirely to HTMLPlugInElement

third_party/WebKit/Source/core/loader/EmptyClients.h

Index: third_party/WebKit/Source/core/loader/EmptyClients.h
diff --git a/third_party/WebKit/Source/core/loader/EmptyClients.h b/third_party/WebKit/Source/core/loader/EmptyClients.h
index 2b288bc7181b53b5b47eebcd97cd45b3616bc846..e23bbf49d80e4a7274b5d61a8b9a9a9f88baccd2 100644
--- a/third_party/WebKit/Source/core/loader/EmptyClients.h
+++ b/third_party/WebKit/Source/core/loader/EmptyClients.h
@@ -339,6 +339,12 @@
   WebRemotePlaybackClient* CreateWebRemotePlaybackClient(
       HTMLMediaElement&) override;
 
+  ObjectContentType GetObjectContentType(const KURL&,
+                                         const String&,
+                                         bool) override {
+    return ObjectContentType();
+  }
+
   void DidCreateNewDocument() override {}
   void DispatchDidClearWindowObjectInMainWorld() override {}
   void DocumentElementAvailable() override {}