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

third_party/WebKit/Source/devtools/front_end/common/BrowserVersionInfo.js

Index: third_party/WebKit/Source/devtools/front_end/common/BrowserVersionInfo.js
diff --git a/third_party/WebKit/Source/devtools/front_end/common/BrowserVersionInfo.js b/third_party/WebKit/Source/devtools/front_end/common/BrowserVersionInfo.js
new file mode 100644
index 0000000000000000000000000000000000000000..520707d09bc1140844853fc0999a3a0c180202ed
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/front_end/common/BrowserVersionInfo.js
@@ -0,0 +1,20 @@
+// 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.
+
+WebInspector.BrowserVersionInfo = {
+    /**
+     * @param {string} uaString
+     * @return {string}
+     */
+    patchUserAgentWithChromeVersion: function(uaString)
+    {
+        // Patches Chrome/CriOS version from user agent ("1.2.3.4" when user agent is: "Chrome/1.2.3.4").
+        var chromeRegex = new RegExp("((?:^|\\W)Chrome/)(\\S+)");
+        var criosRegex = new RegExp("((?:^|\\W)CriOS/)(\\S+)");
+        var chromeMatch = navigator.userAgent.match(chromeRegex);
+        if (chromeMatch && chromeMatch.length > 2)
+            return uaString.replace(chromeRegex, "$1" + chromeMatch[2]).replace(criosRegex, "$1" + chromeMatch[2]);
+        return uaString;
+    }
+};