[SystemInfo API] Implement DisplayInfoProvider::UpdateDisplayUnitInfoForPlatform for Linux GTK

chrome/browser/extensions/api/system_display/display_info_provider_x11.cc

Index: chrome/browser/extensions/api/system_display/display_info_provider_x11.cc
diff --git a/chrome/browser/extensions/api/system_display/display_info_provider_x11.cc b/chrome/browser/extensions/api/system_display/display_info_provider_x11.cc
deleted file mode 100644
index 3776bf90bb496b07dfd5eb437a4dd5d98c7bfa41..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/api/system_display/display_info_provider_x11.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2013 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.
-
-#include "chrome/browser/extensions/api/system_display/display_info_provider.h"
-
-namespace extensions {
-
-void DisplayInfoProvider::SetInfo(
-    const std::string& display_id,
-    const api::system_display::DisplayProperties& info,
-    const SetInfoCallback& callback) {
-  base::MessageLoopProxy::current()->PostTask(
-      FROM_HERE,
-      base::Bind(callback, false, "Not implemented"));
-}
-
-void DisplayInfoProvider::UpdateDisplayUnitInfoForPlatform(
-    const gfx::Display& display,
-    extensions::api::system_display::DisplayUnitInfo* unit) {
-  NOTIMPLEMENTED();
-}
-
-}  // namespace extensions