[DevTools] Remove old responsive design v1 code.

third_party/WebKit/Source/devtools/front_end/emulation/DeviceModeButton.js

-// Copyright 2015 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.
-
-/**
- * @constructor
- * @implements {WebInspector.ToolbarItem.Provider}
- */
-WebInspector.DeviceModeButtonProvider = function()
-{
-    var action = WebInspector.actionRegistry.action("emulation.toggle-device-mode");
-    var button = WebInspector.Toolbar.createActionButton(action);
-    WebInspector.overridesSupport.addEventListener(WebInspector.OverridesSupport.Events.EmulationStateChanged, emulationEnabledChanged);
-    WebInspector.overridesSupport.addEventListener(WebInspector.OverridesSupport.Events.OverridesWarningUpdated, updateWarning);
-
-    emulationEnabledChanged();
-    updateWarning();
-
-    function emulationEnabledChanged()
-    {
-        action.setToggled(WebInspector.overridesSupport.emulationEnabled());
-    }
-
-    function updateWarning()
-    {
-        var message = WebInspector.overridesSupport.warningMessage();
-        action.setTitle(message || WebInspector.UIString("Toggle device mode"));
-        button.element.classList.toggle("warning", !!message);
-    }
-
-    this._button = button;
-}
-
-WebInspector.DeviceModeButtonProvider.prototype = {
-    /**
-     * @override
-     * @return {?WebInspector.ToolbarItem}
-     */
-    item: function()
-    {
-        return this._button;
-    }
-}
-
-/**
- * @constructor
- * @implements {WebInspector.ActionDelegate}
- */
-WebInspector.ToggleDeviceModeActionDelegate = function()
-{
-}
-
-WebInspector.ToggleDeviceModeActionDelegate.prototype = {
-    /**
-     * @override
-     * @param {!WebInspector.Context} context
-     * @param {string} actionId
-     * @return {boolean}
-     */
-    handleAction: function(context, actionId)
-    {
-        WebInspector.overridesSupport.setEmulationEnabled(!WebInspector.overridesSupport.emulationEnabled());
-        return true;
-    }
-}