Remove XMLHttpRequest usage in Speech Rule Engine

In ChromeVox background page on startup via console:
Error: Failed to load resource: net::ERR_FAILED
From chrome-extension://invalid/
(repeated 43 times).

The underlying sre_browser.js packed js script is making failed
XMLHttpRequest calls, blocked by CORS policy.

R=akihiroota@chromium.org

Bug: none
Change-Id: Id2d46ab3976dfc5b85d993403d587e85d4c66600
AX-Relnotes: n/a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2632869Reviewed-by: Akihiro Ota <akihiroota@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844191}

third_party/chromevox/third_party/sre/README.chromium

@@ -2,15 +2,17 @@ Name: Speech Rule Engine
 URL: https://github.com/zorkow/speech-rule-engine
 Version: 2.3.0-beta
 License: Apache 2.0
+Security Critical: no
 
 Description:
 Speech rule engine (SRE) can translate XML expressions into speech strings
 according to rules that can be specified in a syntax using Xpath expressions.
 It was originally designed for translation of MathML and MathJax DOM elements
 for the ChromeVox screen reader.  Besides the rules originally designed for the
-use in ChromeVox, it also has an implemententation of the full set of Mathspeak
+use in ChromeVox, it also has an implementation of the full set of Mathspeak
 rules. In addition it contains a library for semantic interpretation and
 enrichment of MathML expressions.
 
 Local Modifications:
-The lone js file is the packed browser version of SRE.
+- The lone js file is the packed browser version of SRE.
+- All XMLHttpRequest calls were removed.

third_party/chromevox/third_party/sre/sre_browser.js

-var $jscomp={scope:{}};$jscomp.defineProperty="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,c){if(c.get||c.set)throw new TypeError("ES3 does not support getters and setters.");a!=Array.prototype&&a!=Object.prototype&&(a[b]=c.value)};$jscomp.getGlobal=function(a){return"undefined"!=typeof window&&window===a?a:"undefined"!=typeof global?global:a};$jscomp.global=$jscomp.getGlobal(this);$jscomp.SYMBOL_PREFIX="jscomp_symbol_";
+ var $jscomp={scope:{}};$jscomp.defineProperty="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,c){if(c.get||c.set)throw new TypeError("ES3 does not support getters and setters.");a!=Array.prototype&&a!=Object.prototype&&(a[b]=c.value)};$jscomp.getGlobal=function(a){return"undefined"!=typeof window&&window===a?a:"undefined"!=typeof global?global:a};$jscomp.global=$jscomp.getGlobal(this);$jscomp.SYMBOL_PREFIX="jscomp_symbol_";
 $jscomp.initSymbol=function(){$jscomp.initSymbol=function(){};$jscomp.global.Symbol||($jscomp.global.Symbol=$jscomp.Symbol)};$jscomp.symbolCounter_=0;$jscomp.Symbol=function(a){return $jscomp.SYMBOL_PREFIX+(a||"")+$jscomp.symbolCounter_++};
 $jscomp.initSymbolIterator=function(){$jscomp.initSymbol();var a=$jscomp.global.Symbol.iterator;a||(a=$jscomp.global.Symbol.iterator=$jscomp.global.Symbol("iterator"));"function"!=typeof Array.prototype[a]&&$jscomp.defineProperty(Array.prototype,a,{configurable:!0,writable:!0,value:function(){return $jscomp.arrayIterator(this)}});$jscomp.initSymbolIterator=function(){}};$jscomp.arrayIterator=function(a){var b=0;return $jscomp.iteratorPrototype(function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}})};
 $jscomp.iteratorPrototype=function(a){$jscomp.initSymbolIterator();a={next:a};a[$jscomp.global.Symbol.iterator]=function(){return this};return a};$jscomp.array=$jscomp.array||{};$jscomp.iteratorFromArray=function(a,b){$jscomp.initSymbolIterator();a instanceof String&&(a+="");var c=0,d={next:function(){if(c<a.length){var e=c++;return{value:b(e,a[e]),done:!1}}d.next=function(){return{done:!0,value:void 0}};return d.next()}};d[Symbol.iterator]=function(){return d};return d};
@@ -29,7 +29,7 @@ e=goog.dependencies_;b(a);for(a=0;a<c.length;a++){var f=c[a];goog.dependencies_.
 goog.dependencies_.nameToPath?goog.dependencies_.nameToPath[a]:null},goog.findBasePath_(),goog.global.CLOSURE_NO_DEPS||goog.importScript_(goog.basePath+"deps.js"));goog.hasBadLetScoping=null;goog.useSafari10Workaround=function(){if(null==goog.hasBadLetScoping){var a;try{a=!eval('"use strict";let x = 1; function f() { return typeof x; };f() == "number";')}catch(b){a=!1}goog.hasBadLetScoping=a}return goog.hasBadLetScoping};goog.workaroundSafari10EvalBug=function(a){return"(function(){"+a+"\n;})();\n"};
 goog.loadModule=function(a){var b=goog.moduleLoaderState_;try{goog.moduleLoaderState_={moduleName:void 0,declareLegacyNamespace:!1};var c;if(goog.isFunction(a))c=a.call(void 0,{});else if(goog.isString(a))goog.useSafari10Workaround()&&(a=goog.workaroundSafari10EvalBug(a)),c=goog.loadModuleFromSource_.call(void 0,a);else throw Error("Invalid module definition");var d=goog.moduleLoaderState_.moduleName;if(!goog.isString(d)||!d)throw Error('Invalid module name "'+d+'"');goog.moduleLoaderState_.declareLegacyNamespace?
 goog.constructNamespace_(d,c):goog.SEAL_MODULE_EXPORTS&&Object.seal&&"object"==typeof c&&null!=c&&Object.seal(c);goog.loadedModules_[d]=c}finally{goog.moduleLoaderState_=b}};goog.loadModuleFromSource_=function(a){eval(a);return{}};goog.normalizePath_=function(a){a=a.split("/");for(var b=0;b<a.length;)"."==a[b]?a.splice(b,1):b&&".."==a[b]&&a[b-1]&&".."!=a[b-1]?a.splice(--b,2):b++;return a.join("/")};
-goog.loadFileSync_=function(a){if(goog.global.CLOSURE_LOAD_FILE_SYNC)return goog.global.CLOSURE_LOAD_FILE_SYNC(a);try{var b=new goog.global.XMLHttpRequest;b.open("get",a,!1);b.send();return 0==b.status||200==b.status?b.responseText:null}catch(c){return null}};
+goog.loadFileSync_=function(a){};
 goog.retrieveAndExec_=function(a,b,c){if(!COMPILED){var d=a;a=goog.normalizePath_(a);var e=goog.global.CLOSURE_IMPORT_SCRIPT||goog.writeScriptTag_,f=goog.loadFileSync_(a);if(null==f)throw Error('Load of "'+a+'" failed');c&&(f=goog.transpile_.call(goog.global,f,a));f=b?goog.wrapModule_(a,f):f+("\n//# sourceURL="+a);goog.IS_OLD_IE_?(goog.dependencies_.deferred[d]=f,goog.queuedModules_.push(d)):e(a,f)}};
 goog.transpile_=function(a,b){var c=goog.global.$jscomp;c||(goog.global.$jscomp=c={});var d=c.transpile;if(!d){var e=goog.basePath+goog.TRANSPILER,f=goog.loadFileSync_(e);if(f){eval(f+"\n//# sourceURL="+e);if(goog.global.$gwtExport&&goog.global.$gwtExport.$jscomp&&!goog.global.$gwtExport.$jscomp.transpile)throw Error('The transpiler did not properly export the "transpile" method. $gwtExport: '+JSON.stringify(goog.global.$gwtExport));goog.global.$jscomp.transpile=goog.global.$gwtExport.$jscomp.transpile;
 c=goog.global.$jscomp;d=c.transpile}}d||(d=c.transpile=function(a,b){goog.logToConsole_(b+" requires transpilation but no transpiler was found.");return a});return d(a,b)};
@@ -503,7 +503,7 @@ sre.MathMap.retrieveFiles=function(a,b,c){b=sre.BaseUtil.makePath(sre.SystemExte
 e,c);break;default:sre.MathMap.parseFiles(a.map(function(a){return b+a})).forEach(function(a){c(a)})}};
 sre.MathMap.prototype.retrieveMaps=function(){sre.MathMap.retrieveFiles(sre.MathMap.FUNCTIONS_FILES_,sre.MathMap.FUNCTIONS_PATH_,goog.bind(this.store.addFunctionRules,this.store));sre.MathMap.retrieveFiles(sre.MathMap.SYMBOLS_FILES_,sre.MathMap.SYMBOLS_PATH_,goog.bind(this.store.addSymbolRules,this.store));sre.MathMap.retrieveFiles(sre.MathMap.UNITS_FILES_,sre.MathMap.UNITS_PATH_,goog.bind(this.store.addUnitRules,this.store))};
 sre.MathMap.getJsonIE_=function(a,b,c){var d=c||1;sre.BrowserUtil.mapsForIE?((c=sre.BrowserUtil.mapsForIE[a])&&c.forEach(function(a){b(a)}),sre.MathMap.toFetch_--):5>=d?setTimeout(function(){sre.MathMap.getJsonIE_(a,b,d++)},300):sre.MathMap.toFetch_--};sre.MathMap.fromFile_=function(a,b){return sre.SystemExternal.fs.readFile(a,"utf8",b)};sre.MathMap.loadFile=function(a){try{return sre.MathMap.readJSON_(a)}catch(b){console.log("Unable to load file: "+a+", error: "+b)}};sre.MathMap.loadFiles=function(a){return a.map(sre.MathMap.loadFile)};
-sre.MathMap.parseFiles=function(a){a=sre.MathMap.loadFiles(a);return[].concat.apply([],a.map(function(a){return JSON.parse(a)}))};sre.MathMap.readJSON_=function(a){return sre.SystemExternal.fs.readFileSync(a)};sre.MathMap.getJsonAjax_=function(a,b){var c=new XMLHttpRequest;c.onreadystatechange=function(){4===c.readyState&&(sre.MathMap.toFetch_--,200===c.status&&JSON.parse(c.responseText).forEach(function(a){b(a)}))};c.open("GET",a,!0);c.send()};sre.AbstractionRules=function(){sre.MathStore.call(this)};goog.inherits(sre.AbstractionRules,sre.MathStore);goog.addSingletonGetter(sre.AbstractionRules);sre.AbstractionRules.mathStore=sre.AbstractionRules.getInstance();sre.AbstractionRules.defineRule_=goog.bind(sre.AbstractionRules.mathStore.defineRule,sre.AbstractionRules.mathStore);sre.AbstractionRules.defineRuleAlias_=goog.bind(sre.AbstractionRules.mathStore.defineRulesAlias,sre.AbstractionRules.mathStore);
+sre.MathMap.parseFiles=function(a){a=sre.MathMap.loadFiles(a);return[].concat.apply([],a.map(function(a){return JSON.parse(a)}))};sre.MathMap.readJSON_=function(a){return sre.SystemExternal.fs.readFileSync(a)};sre.MathMap.getJsonAjax_=function(a,b){};sre.AbstractionRules=function(){sre.MathStore.call(this)};goog.inherits(sre.AbstractionRules,sre.MathStore);goog.addSingletonGetter(sre.AbstractionRules);sre.AbstractionRules.mathStore=sre.AbstractionRules.getInstance();sre.AbstractionRules.defineRule_=goog.bind(sre.AbstractionRules.mathStore.defineRule,sre.AbstractionRules.mathStore);sre.AbstractionRules.defineRuleAlias_=goog.bind(sre.AbstractionRules.mathStore.defineRulesAlias,sre.AbstractionRules.mathStore);
 sre.AbstractionRules.defineSpecialisedRule_=goog.bind(sre.AbstractionRules.mathStore.defineSpecialisedRule,sre.AbstractionRules.mathStore);sre.AbstractionRules.defineUniqueRuleAlias_=goog.bind(sre.AbstractionRules.mathStore.defineUniqueRuleAlias,sre.AbstractionRules.mathStore);
 sre.AbstractionRules.initAbstractionRules_=function(){(0,sre.AbstractionRules.defineRule_)("abstr-collapsed","mathspeak.default",'[t] "collapsed"; [n] . (grammar:collapsed)',"self::*","@alternative",'not(@alternative="summary")','not(contains(@grammar, "collapsed"))');(0,sre.AbstractionRules.defineRule_)("abstr-identifier","mathspeak.default",'[t] "long identifier"',"self::identifier","@alternative","self::*","self::*","self::*","self::*");(0,sre.AbstractionRules.defineRule_)("abstr-identifier","mathspeak.default",
 '[t] "identifier"',"self::identifier",'@alternative="summary"',"@alternative","self::*","self::*","self::*","self::*");(0,sre.AbstractionRules.defineRule_)("abstr-identifier","mathspeak.brief",'[t] "identifier"',"self::identifier","@alternative","self::*","self::*","self::*","self::*");(0,sre.AbstractionRules.defineSpecialisedRule_)("abstr-identifier","mathspeak.brief","mathspeak.sbrief");(0,sre.AbstractionRules.defineRule_)("abstr-number","mathspeak.default",'[t] "long number"',"self::number","@alternative");