DevTools: patch browser's Chrome version into Chrome user agents for emulation

third_party/WebKit/Source/devtools/scripts/hosted_mode/server.js

 // Copyright (c) 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.
 var fs = require("fs");
 var http = require("http");
 var https = require("https");
 var path = require("path");
 var parseURL = require("url").parse;
 var Stream = require("stream").Transform;
 
@@ skipping 64 matching lines @@
     {
         response.writeHead(statusCode);
         response.write(data, "binary");
         response.end();
     }
 }
 
 var proxyFilePathToURL = {
     "/front_end/SupportedCSSProperties.js": cloudURL.bind(null, "SupportedCSSProperties.js"),
     "/front_end/InspectorBackendCommands.js": cloudURL.bind(null, "InspectorBackendCommands.js"),
+    "/front_end/CurrentBrowserVersion.js": cloudURL.bind(null, "CurrentBrowserVersion.js"),
     "/favicon.ico": () => "https://chrome-devtools-frontend.appspot.com/favicon.ico"
 };
 
 function cloudURL(path, commitHash)
 {
     return `https://chrome-devtools-frontend.appspot.com/serve_file/@${commitHash}/${path}`;
 }
 
 var proxyFileCache = new Map();
 
@@ skipping 56 matching lines @@
         if (response.statusCode !== 200) {
             reject(new Error(`Request error: + ${response.statusCode}`));
             return;
         }
         var body = new Stream();
         response.on("data", chunk => body.push(chunk));
         response.on("end", () => resolve(body.read()));
     }
 }