Update third_party/document_image_extractor

third_party/document_image_extractor/third_party/src/document_feature_extractor.js

Index: third_party/document_image_extractor/third_party/src/document_feature_extractor.js
diff --git a/third_party/document_image_extractor/third_party/src/document_feature_extractor.js b/third_party/document_image_extractor/third_party/src/document_feature_extractor.js
deleted file mode 100644
index 200c93728f4008a98e5bf28c17f12a32d96368c1..0000000000000000000000000000000000000000
--- a/third_party/document_image_extractor/third_party/src/document_feature_extractor.js
+++ /dev/null
@@ -1,117 +0,0 @@
-goog.provide('image.collections.extension.DocumentFeatureExtractor');
-
-goog.require('goog.asserts');
-goog.require('image.collections.extension.DocumentFeature');
-goog.require('image.collections.extension.ElementFilter');
-
-goog.scope(function() {
-var DocumentFeature = image.collections.extension.DocumentFeature;
-var ElementFilter = image.collections.extension.ElementFilter;
-
-
-
-/**
- * A base class for document feature (title, snippet, image) extractors.
- * @constructor
- */
-image.collections.extension.DocumentFeatureExtractor = function() {
-  /** @protected {!Array.<!ElementFilter>} */
-  this.filters_ = [];
-};
-var DocumentFeatureExtractor =
-    image.collections.extension.DocumentFeatureExtractor;
-
-
-/**
- * Installs an element filter.
- * @param {!ElementFilter} filter
- * @protected
- */
-DocumentFeatureExtractor.prototype.addFilter = function(filter) {
-  this.filters_.push(filter);
-};
-
-
-/**
- * Returns true iff an element passes all the filters.
- * @param {!Element} element
- * @return {boolean}
- */
-DocumentFeatureExtractor.prototype.filter = function(element) {
-  for (var i = 0; i < this.filters_.length; ++i) {
-    if (!this.filters_[i].filter(element)) {
-      return false;
-    }
-  }
-  return true;
-};
-
-
-/**
- * Given an HTML document, returns a feature with a highest relevance value.
- * TODO(busaryev): look at the mean, median relevance etc.
- * @param {!Document} doc HTML document.
- * @return {DocumentFeature}
- */
-DocumentFeatureExtractor.prototype.extractBestFromDocument = function(doc) {
-  var features = this.extractAllFromDocument(doc);
-  if (features.length == 0) return null;
-  var best = features[0];
-  for (var i = 1; i < features.length; ++i) {
-    var feature = features[i];
-    if (feature.getRelevance() > best.getRelevance()) {
-      best = feature;
-    }
-  }
-  return best;
-};
-
-
-/**
- * Given an HTML document, returns an array of features sorted by relevance.
- * By default, this function tries to extract a feature from every DOM element.
- * Derived classes may override this function to look at a subset of DOM (e.g.
- * only <meta> and <link> elements).
- * @param {!Document} doc HTML document.
- * @return {!Array.<!DocumentFeature>}
- */
-DocumentFeatureExtractor.prototype.extractAllFromDocument = function(doc) {
-  return this.extractFromNodeList(doc.getElementsByTagName('*'));
-};
-
-
-/**
- * This function tries to extract a feature from every node in a nodelist
- * and returns an array of features.
- * @param {!NodeList} nodeList DOM node list.
- * @param {!Object=} opt_context Optional context.
- * @return {!Array.<!DocumentFeature>}
- */
-DocumentFeatureExtractor.prototype.extractFromNodeList = function(
-    nodeList, opt_context) {
-  goog.asserts.assert(goog.isArrayLike(nodeList));
-  var result = [];
-  var nodeListLength = nodeList.length;
-  for (var j = 0; j < nodeListLength; ++j) {
-    var feature = this.extractFromElement(nodeList[j], opt_context);
-    if (feature) {
-      result.push(feature);
-    }
-  }
-  return result;
-};
-
-
-/**
- * This function extracts a feature from an HTML element. It should be
- * overridden in derived classes, unless the feature can be extracted without
- * looking at DOM.
- * @param {!Element} element HTML element.
- * @param {!Object=} opt_context Optional context.
- * @return {DocumentFeature}
- */
-DocumentFeatureExtractor.prototype.extractFromElement = function(
-    element, opt_context) {
-  return null;
-};
-});  // goog.scope