DevTools: add "npm test" to run tests by fetching content shells

third_party/WebKit/Source/devtools/scripts/js_build/gulpfile.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.
 
 var childProcess = require("child_process");
 var fs = require("fs");
 var path = require("path");
 var shell = childProcess.execSync;
 
 var del = require("del");
 var fsPromise = require("fs-promise");
 var gulp = require("gulp");
 
 var concatenateProtocols = require("./ConcatenateProtocols.js");
 var utils = require("../utils.js");
 
+var chromiumGitRef = process.env.CHROMIUM_COMMIT || "master";
+var v8GitRef = process.env.V8_COMMIT || "master";
+
 var devtoolsPath = path.resolve(path.join(__dirname, "../.."));
 var frontendPath = path.join(devtoolsPath, "front_end");
 var releasePath = path.join(devtoolsPath, "release");
 var scriptsPath = path.join(devtoolsPath, "scripts");
 
 gulp.task("default", ["build"]);
 
 gulp.task("clean", cleanTask);
 function cleanTask()
 {
@@ skipping 43 matching lines @@
         path.join(releasePath, "browser_protocol.json"),
         path.join(releasePath, "js_protocol.json"),
     ];
     var output = path.join(releasePath, "protocol.json");
     concatenateProtocols(protocols, output);
 }
 
 gulp.task("fetchProtocol", ["clean"], fetchProtocolTask);
 function fetchProtocolTask(done)
 {
-    var browserProtocolURL = "https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT";
+    var browserProtocolURL = `https://chromium.googlesource.com/chromium/src/+/${chromiumGitRef}/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT`;
     var browserProtocolFile = path.join(releasePath, "browser_protocol.json");
     var browserProtocolPromise = fetchAndSaveCodePromise(browserProtocolURL, browserProtocolFile);
 
-    var jsProtocolURL = "https://chromium.googlesource.com/v8/v8/+/master/src/inspector/js_protocol.json?format=TEXT";
+    var jsProtocolURL = `https://chromium.googlesource.com/v8/v8/+/${v8GitRef}/src/inspector/js_protocol.json?format=TEXT`;
     var jsProtocolFile = path.join(releasePath, "js_protocol.json");
     var jsProtocolPromise = fetchAndSaveCodePromise(jsProtocolURL, jsProtocolFile);
-
     Promise.all([browserProtocolPromise, jsProtocolPromise])
         .then(() => done())
         .catch(err => console.log("Error fetching protocols:", err));
 }
 
 gulp.task("generateSupportedCSSProperties", ["fetchSupportedCSSProperties"], generateSupportedCSSProperties);
 function generateSupportedCSSProperties()
 {
     var script = path.join(scriptsPath, "generate_supported_css.py");
     var inputs = [path.join(releasePath, "CSSProperties.in")];
     var outputs = [path.join(releasePath, "SupportedCSSProperties.js")];
     var args = inputs.concat(outputs);
     runPythonScript(script, args);
     del.sync([path.join(releasePath, "CSSProperties.in")], {force: true});
 }
 
 gulp.task("fetchSupportedCSSProperties", ["clean"], fetchSupportedCSSProperties);
 function fetchSupportedCSSProperties(done)
 {
-    var supportedCSSPropertiesURL = "https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/Source/core/css/CSSProperties.in?format=TEXT";
+    var supportedCSSPropertiesURL = `https://chromium.googlesource.com/chromium/src/+/${chromiumGitRef}/third_party/WebKit/Source/core/css/CSSProperties.in?format=TEXT`;
     var supportedCSSPropertiesFile = path.join(releasePath, "CSSProperties.in");
     fetchAndSaveCodePromise(supportedCSSPropertiesURL, supportedCSSPropertiesFile)
         .then(() => done())
         .catch(err => console.log("Error fetching CSS properties:", err));
 }
 
 gulp.task("generateDevtoolsExtensionAPI", ["clean"], generateDevtoolsExtensionAPITask);
 function generateDevtoolsExtensionAPITask()
 {
     var script = path.join(scriptsPath, "generate_devtools_extension_api.py");
@@ skipping 22 matching lines @@
 {
     return utils.fetch(url)
         .then(buffer => utils.atob(buffer.toString("binary")))
         .then(data => fsPromise.writeFile(file, data));
 }
 
 function runPythonScript(script, args)
 {
     shell(`python ${script} ${args.join(" ")}`);
 }