DevTools: Add UC Browser to preset list of user agent overrides

Adds a new section to the user agent override preset list.
Sources for user agents:
https://www.whatismybrowser.com/developers/tools/user-agent-parser/browse/browser-name/uc-browser-user-agents
http://www.webapps-online.com/online-tools/user-agent-strings/dv/browser212364/uc-browser

BUG=646360

Review-Url: https://codereview.chromium.org/2356593002
Cr-Commit-Position: refs/heads/master@{#419913}

third_party/WebKit/Source/devtools/front_end/network/NetworkConfigView.js

@@ -243,5 +243,13 @@ WebInspector.NetworkConfigView._userAgentGroups = [
             {title: "Safari \u2014 iPhone iOS 9", value: "Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B137 Safari/601.1"},
             {title: "Safari \u2014 Mac", value: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A"}
         ]
+    },
+    {
+        title: "UC Browser",
+        values: [
+            {title: "UC Browser \u2014 Android Mobile", value: "Mozilla/5.0 (Linux; U; Android 4.4.4; en-US; XT1022 Build/KXC21.5-40) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/10.7.0.636 U3/0.8.0 Mobile Safari/534.30"},
+            {title: "UC Browser \u2014 iOS", value: "UCWEB/2.0 (iPad; U; CPU OS 7_1 like Mac OS X; en; iPad3,6) U2/1.0.0 UCBrowser/9.3.1.344"},
+            {title: "UC Browser \u2014 Windows Phone", value: "NokiaX2-02/2.0 (11.79) Profile/MIDP-2.1 Configuration/CLDC-1.1 Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2;.NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2) UCBrowser8.4.0.159/70/352"}
+        ]
     }
 ]