DevTools: Display pixel value in Device Emulation

Source/devtools/front_end/OverridesView.js

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 555 matching lines @@
         this._heightOverrideElement = this._createInput(cellElement, "metrics-override-height", String(metrics.height || screen.height), this._applyDeviceMetricsUserInput.bind(this), true);
 
         rowElement = tableElement.createChild("tr");
         cellElement = rowElement.createChild("td");
         cellElement.colSpan = 4;
         this._widthRangeInput = cellElement.createChild("input");
         this._widthRangeInput.type = "range";
         this._widthRangeInput.min = 100;
         this._widthRangeInput.max = 2000;
         this._widthRangeInput.addEventListener("change", this._rangeValueChanged.bind(this), false);
+        this._widthRangeInput.addEventListener("input", this._rangeValueChanged.bind(this), false);
         this._widthRangeInput.value = this._widthOverrideElement.value;
 
         rowElement = tableElement.createChild("tr");
         rowElement.title = WebInspector.UIString("Ratio between a device's physical pixels and device-independent pixels.");
         cellElement = rowElement.createChild("td");
         cellElement.appendChild(document.createTextNode(WebInspector.UIString("Device pixel ratio:")));
         cellElement = rowElement.createChild("td");
         this._deviceScaleFactorOverrideElement = this._createInput(cellElement, "metrics-override-device-scale", String(metrics.deviceScaleFactor || 1), this._applyDeviceMetricsUserInput.bind(this), true);
 
         var textAutosizingOverrideElement = this._createNonPersistedCheckbox(WebInspector.UIString("Enable text autosizing "), this._applyDeviceMetricsUserInput.bind(this));
@@ skipping 502 matching lines @@
 
     __proto__ : WebInspector.OverridesView.Tab.prototype
 }
 
 /** @enum {string} */
 WebInspector.OverridesView.SensorsTab.DeviceOrientationModificationSource = {
     UserInput: "userInput",
     UserDrag: "userDrag",
     ResetButton: "resetButton"
 }