Remove a superfluous "s" in AnnotationsLayerBuilder from files in web/

This patch makes the naming consistent with the `TextLayerBuilder`, and also the new `AnnotationLayer`, and should thus help reduce possible confusion when working with the code.
Please note that the files were renamed using `git mv`, in order to preserve blame.

web/annotation_layer_builder.js

@@ -0,0 +1,111 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*globals PDFJS, mozL10n, SimpleLinkService */
+
+'use strict';
+
+/**
+ * @typedef {Object} AnnotationLayerBuilderOptions
+ * @property {HTMLDivElement} pageDiv
+ * @property {PDFPage} pdfPage
+ * @property {IPDFLinkService} linkService
+ */
+
+/**
+ * @class
+ */
+var AnnotationLayerBuilder = (function AnnotationLayerBuilderClosure() {
+  /**
+   * @param {AnnotationLayerBuilderOptions} options
+   * @constructs AnnotationLayerBuilder
+   */
+  function AnnotationLayerBuilder(options) {
+    this.pageDiv = options.pageDiv;
+    this.pdfPage = options.pdfPage;
+    this.linkService = options.linkService;
+
+    this.div = null;
+  }
+
+  AnnotationLayerBuilder.prototype =
+      /** @lends AnnotationLayerBuilder.prototype */ {
+
+    /**
+     * @param {PageViewport} viewport
+     * @param {string} intent (default value is 'display')
+     */
+    render: function AnnotationLayerBuilder_render(viewport, intent) {
+      var self = this;
+      var parameters = {
+        intent: (intent === undefined ? 'display' : intent),
+      };
+
+      this.pdfPage.getAnnotations(parameters).then(function (annotations) {
+        viewport = viewport.clone({ dontFlip: true });
+
+        if (self.div) {
+          // If an annotationLayer already exists, refresh its children's
+          // transformation matrices.
+          PDFJS.AnnotationLayer.update(viewport, self.div, annotations);
+        } else {
+          // Create an annotation layer div and render the annotations
+          // if there is at least one annotation.
+          if (annotations.length === 0) {
+            return;
+          }
+
+          self.div = document.createElement('div');
+          self.div.className = 'annotationLayer';
+          self.pageDiv.appendChild(self.div);
+
+          PDFJS.AnnotationLayer.render(viewport, self.div, annotations,
+                                       self.pdfPage, self.linkService);
+          if (typeof mozL10n !== 'undefined') {
+            mozL10n.translate(self.div);
+          }
+        }
+      });
+    },
+
+    hide: function AnnotationLayerBuilder_hide() {
+      if (!this.div) {
+        return;
+      }
+      this.div.setAttribute('hidden', 'true');
+    }
+  };
+
+  return AnnotationLayerBuilder;
+})();
+
+/**
+ * @constructor
+ * @implements IPDFAnnotationLayerFactory
+ */
+function DefaultAnnotationLayerFactory() {}
+DefaultAnnotationLayerFactory.prototype = {
+  /**
+   * @param {HTMLDivElement} pageDiv
+   * @param {PDFPage} pdfPage
+   * @returns {AnnotationLayerBuilder}
+   */
+  createAnnotationLayerBuilder: function (pageDiv, pdfPage) {
+    return new AnnotationLayerBuilder({
+      pageDiv: pageDiv,
+      pdfPage: pdfPage,
+      linkService: new SimpleLinkService(),
+    });
+  }
+};