SELECT popup: Don't use non-100% zoom level in popup.

third_party/WebKit/Source/web/PopupMenuImpl.h

 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PopupMenuImpl_h
 #define PopupMenuImpl_h
 
 #include "core/page/PagePopupClient.h"
 #include "platform/PopupMenu.h"
 
@@ skipping 32 matching lines @@
   void disconnectClient() override;
   void updateFromElement(UpdateReason) override;
 
   // PagePopupClient functions:
   void writeDocument(SharedBuffer*) override;
   void selectFontsFromOwnerDocument(Document&) override;
   void setValueAndClosePopup(int, const String&) override;
   void setValue(const String&) override;
   void closePopup() override;
   Element& ownerElement() override;
+  float zoomFactor() override { return 1.0; }
   Locale& locale() override;
   void didClosePopup() override;
 
   Member<ChromeClientImpl> m_chromeClient;
   Member<HTMLSelectElement> m_ownerElement;
   PagePopup* m_popup;
   bool m_needsUpdate;
 };
 
 }  // namespace blink
 
 #endif  // PopupMenuImpl_h