Bug 1544285 - tools/ automated ESLint no-throw-literal fixes. r=dbaron

Result of running:
$ mach eslint -funix tools/ | sed -Ee 's/:.+//' - | xargs sed -E \
    -e 's/throw ((["`])[^"]+\2);/throw new Error(\1);/g' \
    -e 's/throw ((["`])[^"]+\2 \+ [^ ";]+);/throw new Error(\1);/g' \
    -e 's/throw \(/throw new Error(/g' -i

Differential Revision: https://phabricator.services.mozilla.com/D27450

--HG--
extra : moz-landing-system : lando

.eslintrc.js

@@ -87,7 +87,6 @@ module.exports = {
   }, {
     // TODO: Bug 1246594. Empty this list once the rule has landed for all dirs
     "files": [
-      "tools/leak-gauge/leak-gauge.html",
       "xpcom/tests/unit/test_iniParser.js",
     ],
     "rules": {

tools/leak-gauge/leak-gauge.html

@@ -44,7 +44,7 @@ function runContents(result, contents) {
                     if (verb == "created") {
                         let m = rest.match(/ outer=([0-9a-f]*)$/);
                         if (!m)
-                            throw "outer expected";
+                            throw new Error("outer expected");
                         this.windows[addr] = { outer: m[1] };
                         ++this.count;
                     } else if (verb == "destroyed") {
@@ -52,7 +52,7 @@ function runContents(result, contents) {
                     } else if (verb == "SetNewDocument") {
                         let m = rest.match(/^ (.*)$/);
                         if (!m)
-                            throw "URI expected";
+                            throw new Error("URI expected");
                         this.windows[addr][m[1]] = true;
                     }
                 }
@@ -94,7 +94,7 @@ function runContents(result, contents) {
                                verb == "StartDocumentLoad") {
                         var m = rest.match(/^ (.*)$/);
                         if (!m)
-                            throw "URI expected";
+                            throw new Error("URI expected");
                         var uri = m[1];
                         var doc_info = this.docs[addr];
                         doc_info[uri] = true;
@@ -138,7 +138,7 @@ function runContents(result, contents) {
                                verb == "SetCurrentURI") {
                         var m = rest.match(/^ (.*)$/);
                         if (!m)
-                            throw "URI expected";
+                            throw new Error("URI expected");
                         this.shells[addr][m[1]] = true;
                     }
                 }
@@ -174,7 +174,7 @@ function runContents(result, contents) {
                     } else if (verb == "Init") {
                         var m = rest.match(/^ document=(.*)$/);
                         if (!m)
-                            throw "document pointer expected";
+                            throw new Error("document pointer expected");
                         var nim_info = this.nims[addr];
                         var doc = m[1];
                         if (doc != "0") {