DevTools: disable smoothing and correct nexus device frame dimensions for screenshots

third_party/WebKit/Source/devtools/front_end/emulation/DeviceModeView.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.DeviceModeView = function()
 {
@@ skipping 402 matching lines @@
             if (error) {
                 console.error(error);
                 return;
             }
 
             // Create a canvas to splice the images together.
             var canvas = createElement("canvas");
             var ctx = canvas.getContext("2d");
             canvas.width = outlineRect.width;
             canvas.height = outlineRect.height;
+            ctx.imageSmoothingEnabled = false;
 
             var promise = Promise.resolve();
             if (this._model.outlineImage())
                 promise = promise.then(paintImage.bind(null, this._model.outlineImage(), outlineRect));
             promise = promise.then(drawBorder);
             if (this._model.screenImage())
                 promise = promise.then(paintImage.bind(null, this._model.screenImage(), screenRect));
             promise.then(paintScreenshot.bind(this));
 
             /**
@@ skipping 153 matching lines @@
     /**
      * @param {number} size
      */
     _onMarkerClick: function(size)
     {
         this._applyCallback.call(null, size);
     },
 
     __proto__: WebInspector.VBox.prototype
 }