[DevTools] Initial implementation of device modes.

Source/devtools/front_end/emulation/DevicesSettingsTab.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
  * @extends {WebInspector.VBox}
  */
 WebInspector.DevicesSettingsTab = function()
 {
@@ skipping 262 matching lines @@
             return;
 
         this._editDevice.setShow(this._editDeviceCheckbox.checked);
         this._editDevice.title = this._editDeviceTitle.value;
         this._editDevice.vertical.width = this._editDeviceWidth.value ? parseInt(this._editDeviceWidth.value, 10) : 0;
         this._editDevice.vertical.height = this._editDeviceHeight.value ? parseInt(this._editDeviceHeight.value, 10) : 0;
         this._editDevice.horizontal.width = this._editDevice.vertical.height;
         this._editDevice.horizontal.height = this._editDevice.vertical.width;
         this._editDevice.deviceScaleFactor = this._editDeviceScale.value ? parseFloat(this._editDeviceScale.value) : 0;
         this._editDevice.userAgent = this._editDeviceUserAgent.value;
+        this._editDevice.createImplicitModes();
 
         this._stopEditing();
         if (this._editDeviceListItem)
             WebInspector.emulatedDevicesList.saveCustomDevices();
         else
             WebInspector.emulatedDevicesList.addCustomDevice(this._editDevice);
         this._editDevice = null;
         this._editDeviceListItem = null;
     },
 
     _stopEditing: function()
     {
         this._devicesList.classList.remove("devices-list-editing");
         if (this._editDeviceListItem)
             this._editDeviceListItem.classList.remove("hidden");
         if (this._editDeviceElement.parentElement)
             this._devicesList.removeChild(this._editDeviceElement);
         this._addCustomButton.disabled = false;
         this._addCustomButton.focus();
     },
 
     __proto__: WebInspector.VBox.prototype
 }