Remove dependency of DateTimeChooserImpl on ChromeClientImpl

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 e4ab293664602bf4fbc3542a8c11743a43e5f1be..c367de21786c764d451ad5123b9f11da62d3e212 100644
--- a/third_party/WebKit/Source/core/loader/EmptyClients.h
+++ b/third_party/WebKit/Source/core/loader/EmptyClients.h
@@ -163,6 +163,8 @@ class CORE_EXPORT EmptyChromeClient : public ChromeClient {
 
   bool HasOpenedPopup() const override { return false; }
   PopupMenu* OpenPopupMenu(LocalFrame&, HTMLSelectElement&) override;
+  PagePopup* OpenPagePopup(PagePopupClient*) override { return nullptr; }
+  void ClosePagePopup(PagePopup*) override{};
   DOMWindow* PagePopupWindowForTesting() const override { return nullptr; }
 
   void SetStatusbarText(const String&) override {}