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diff --git a/contexts/data/lib/closure-library/closure/goog/dom/browserrange/webkitrange.js b/contexts/data/lib/closure-library/closure/goog/dom/browserrange/webkitrange.js
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--- a/contexts/data/lib/closure-library/closure/goog/dom/browserrange/webkitrange.js
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2007 The Closure Library Authors. All Rights Reserved.
-//
-// 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.
-
-/**
- * @fileoverview Definition of the WebKit specific range wrapper. Inherits most
- * functionality from W3CRange, but adds exceptions as necessary.
- *
- * DO NOT USE THIS FILE DIRECTLY. Use goog.dom.Range instead.
- *
- * @author robbyw@google.com (Robby Walker)
- */
-
-
-goog.provide('goog.dom.browserrange.WebKitRange');
-
-goog.require('goog.dom.RangeEndpoint');
-goog.require('goog.dom.browserrange.W3cRange');
-goog.require('goog.userAgent');
-
-
-
-/**
- * The constructor for WebKit specific browser ranges.
- * @param {Range} range The range object.
- * @constructor
- * @extends {goog.dom.browserrange.W3cRange}
- */
-goog.dom.browserrange.WebKitRange = function(range) {
- goog.dom.browserrange.W3cRange.call(this, range);
-};
-goog.inherits(goog.dom.browserrange.WebKitRange,
- goog.dom.browserrange.W3cRange);
-
-
-/**
- * Creates a range object that selects the given node's text.
- * @param {Node} node The node to select.
- * @return {goog.dom.browserrange.WebKitRange} A WebKit range wrapper object.
- */
-goog.dom.browserrange.WebKitRange.createFromNodeContents = function(node) {
- return new goog.dom.browserrange.WebKitRange(
- goog.dom.browserrange.W3cRange.getBrowserRangeForNode(node));
-};
-
-
-/**
- * Creates a range object that selects between the given nodes.
- * @param {Node} startNode The node to start with.
- * @param {number} startOffset The offset within the start node.
- * @param {Node} endNode The node to end with.
- * @param {number} endOffset The offset within the end node.
- * @return {goog.dom.browserrange.WebKitRange} A wrapper object.
- */
-goog.dom.browserrange.WebKitRange.createFromNodes = function(startNode,
- startOffset, endNode, endOffset) {
- return new goog.dom.browserrange.WebKitRange(
- goog.dom.browserrange.W3cRange.getBrowserRangeForNodes(startNode,
- startOffset, endNode, endOffset));
-};
-
-
-/** @override */
-goog.dom.browserrange.WebKitRange.prototype.compareBrowserRangeEndpoints =
- function(range, thisEndpoint, otherEndpoint) {
- // Webkit pre-528 has some bugs where compareBoundaryPoints() doesn't work the
- // way it is supposed to, but if we reverse the sense of two comparisons,
- // it works fine.
- // https://bugs.webkit.org/show_bug.cgi?id=20738
- if (goog.userAgent.isVersion('528')) {
- return (goog.dom.browserrange.WebKitRange.superClass_.
- compareBrowserRangeEndpoints.call(
- this, range, thisEndpoint, otherEndpoint));
- }
- return this.range_.compareBoundaryPoints(
- otherEndpoint == goog.dom.RangeEndpoint.START ?
- (thisEndpoint == goog.dom.RangeEndpoint.START ?
- goog.global['Range'].START_TO_START :
- goog.global['Range'].END_TO_START) : // Sense reversed
- (thisEndpoint == goog.dom.RangeEndpoint.START ?
- goog.global['Range'].START_TO_END : // Sense reversed
- goog.global['Range'].END_TO_END),
- /** @type {Range} */ (range));
-};
-
-
-/** @override */
-goog.dom.browserrange.WebKitRange.prototype.selectInternal = function(
- selection, reversed) {
- // Unselect everything. This addresses a bug in Webkit where it sometimes
- // caches the old selection.
- // https://bugs.webkit.org/show_bug.cgi?id=20117
- selection.removeAllRanges();
-
- if (reversed) {
- selection.setBaseAndExtent(this.getEndNode(), this.getEndOffset(),
- this.getStartNode(), this.getStartOffset());
- } else {
- selection.setBaseAndExtent(this.getStartNode(), this.getStartOffset(),
- this.getEndNode(), this.getEndOffset());
- }
-};