DevTools: extract NetworkConditionsSelector into its own module

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

 // Copyright 2016 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.
 /**
  * @unrestricted
  */
 Emulation.DeviceModeToolbar = class {
   /**
    * @param {!Emulation.DeviceModeModel} model
    * @param {!Common.Setting} showMediaInspectorSetting
@@ skipping 160 matching lines @@
         this._wrapToolbarItem(createElementWithClass('div', 'device-mode-empty-toolbar-element')));
     this._modeButton = new UI.ToolbarButton('', 'largeicon-rotate-screen');
     this._modeButton.addEventListener(UI.ToolbarButton.Events.Click, this._modeMenuClicked, this);
     toolbar.appendToolbarItem(this._modeButton);
   }
 
   /**
    * @param {!UI.Toolbar} toolbar
    */
   _fillOptionsToolbar(toolbar) {
-    this._networkConditionsItem = Components.NetworkConditionsSelector.createToolbarMenuButton();
+    this._networkConditionsItem = NetworkConditions.NetworkConditionsSelector.createToolbarMenuButton();
     this._networkConditionsItem.setVisible(this._showNetworkConditionsSetting.get());
     this._networkConditionsItem.setTitle(Common.UIString('Network throttling'));
     this._networkConditionsItem.element.style.padding = '0 5px';
     this._networkConditionsItem.element.style.maxWidth = '140px';
     toolbar.appendToolbarItem(this._networkConditionsItem);
 
     var moreOptionsButton = new UI.ToolbarMenuButton(this._appendOptionsMenuItems.bind(this));
     moreOptionsButton.setTitle(Common.UIString('More options'));
     toolbar.appendToolbarItem(moreOptionsButton);
 
@@ skipping 389 matching lines @@
             this._emulateDevice(device);
             return;
           }
         }
       }
     }
 
     this._model.emulate(Emulation.DeviceModeModel.Type.Responsive, null, null);
   }
 };