DevTools: add backend for discovering connected ADB devices.

chrome/browser/resources/inspect/inspect.js

 // Copyright (c) 2012 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.
 
 function requestData() {
   var xhr = new XMLHttpRequest();
   xhr.open('GET', 'targets-data.json', false);
   xhr.send(null);
   if (xhr.status === 200)
     return JSON.parse(xhr.responseText);
   return [];
 }
 
+function adbQuery(query) {
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', 'adb-query/' + query, false);
+  xhr.send(null);
+  if (xhr.status === 200)
+    return JSON.parse(xhr.responseText);
+  return [String(xhr.status), ''];
+}
+
+function xhr(url) {
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', 'local-xhr/' + url, false);
+  xhr.send(null);
+  if (xhr.status === 200)
+    return JSON.parse(xhr.responseText);
+  return [String(xhr.status), ''];
+}
+
 function inspect(data) {
   chrome.send('inspect',
               [String(data.processId), String(data.routeId)]);
 }
 
 function terminate(data) {
   chrome.send('terminate',
               [String(data.processId), String(data.routeId)]);
 }
 
@@ skipping 100 matching lines @@
   link.setAttribute('href', '#');
   link.textContent = ' terminate ';
   link.addEventListener(
       'click',
       terminate.bind(this, data),
       true);
   return link;
 }
 
 document.addEventListener('DOMContentLoaded', populateLists);