Revert of Mojo JS bindings: support auto-loading mojom.js deps.

mojo/public/js/new_bindings/base.js

 // Copyright 2017 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.
 
 'use strict';
 
 if (mojoBindings) {
   throw new Error('mojoBindings has been initialized.');
 }
 
 var mojoBindings = {};
 mojoBindings.internal = {};
 mojoBindings.internal.global = this;
-mojoBindings.config = {
-  // Whether to automatically load mojom dependencies.
-  // For example, if foo.mojom imports bar.mojom, |autoLoadMojomDeps| set to
-  // true means that loading foo.mojom.js will insert a <script> tag to load
-  // bar.mojom.js, if it hasn't been loaded.
-  //
-  // The URL of bar.mojom.js is determined by the relative path of bar.mojom
-  // (relative to the position of foo.mojom at build time) and the URL of
-  // foo.mojom.js. For exmple, if at build time the two mojom files are
-  // located at:
-  //   a/b/c/foo.mojom
-  //   a/b/d/bar.mojom
-  // and the URL of foo.mojom.js is:
-  //   http://example.org/scripts/b/c/foo.mojom.js
-  // then the URL of bar.mojom.js will be:
-  //   http://example.org/scripts/b/d/bar.mojom.js
-  //
-  // If you would like bar.mojom.js to live at a different location, you need
-  // to turn off |autoLoadMojomDeps| before loading foo.mojom.js, and manually
-  // load bar.mojom.js yourself. Similarly, you need to turn off the option if
-  // you merge bar.mojom.js and foo.mojom.js into a single file.
-  //
-  // Performance tip: Avoid loading the same mojom.js file multiple times.
-  // Assume that |autoLoadMojomDeps| is set to true:
-  // <!-- No duplicate loading; recommended. -->
-  // <script src="http://example.org/scripts/b/c/foo.mojom.js"></script>
-  //
-  // <!-- No duplicate loading, although unnecessary. -->
-  // <script src="http://example.org/scripts/b/d/bar.mojom.js"></script>
-  // <script src="http://example.org/scripts/b/c/foo.mojom.js"></script>
-  //
-  // <!-- Load bar.mojom.js twice; should be avoided. -->
-  // <script src="http://example.org/scripts/b/c/foo.mojom.js"></script>
-  // <script src="http://example.org/scripts/b/d/bar.mojom.js"></script>
-  autoLoadMojomDeps: true
-};
 
 (function() {
   var internal = mojoBindings.internal;
 
-  var LoadState = {
-    PENDING_LOAD: 1,
-    LOADED: 2
-  };
-
-  var mojomRegistry = new Map();
-
   function exposeNamespace(namespace) {
     var current = internal.global;
     var parts = namespace.split('.');
 
     for (var part; parts.length && (part = parts.shift());) {
       if (!current[part]) {
         current[part] = {};
       }
       current = current[part];
     }
 
     return current;
   }
 
-  function isMojomPendingLoad(id) {
-    return mojomRegistry.get(id) === LoadState.PENDING_LOAD;
-  }
-
-  function isMojomLoaded(id) {
-    return mojomRegistry.get(id) === LoadState.LOADED;
-  }
-
-  function markMojomPendingLoad(id) {
-    if (isMojomLoaded(id)) {
-      throw new Error('The following mojom file has been loaded: ' + id);
-    }
-
-    mojomRegistry.set(id, LoadState.PENDING_LOAD);
-  }
-
-  function markMojomLoaded(id) {
-    mojomRegistry.set(id, LoadState.LOADED);
-  }
-
-  function loadMojomIfNecessary(id, url) {
-    if (mojomRegistry.has(id)) {
-      return;
-    }
-
-    markMojomPendingLoad(id);
-    internal.global.document.write('<script type="text/javascript" src="' +
-                                   url + '"></script>');
-  }
-
   internal.exposeNamespace = exposeNamespace;
-  internal.isMojomPendingLoad = isMojomPendingLoad;
-  internal.isMojomLoaded = isMojomLoaded;
-  internal.markMojomPendingLoad = markMojomPendingLoad;
-  internal.markMojomLoaded = markMojomLoaded;
-  internal.loadMojomIfNecessary = loadMojomIfNecessary;
 })();