[devtools] Roll acorn and acorn-loose 7.1.0.

Remove the `ACORN_ECMA_VERSION` constant, and instead rely on the
official `ecmaVersion` default in acorn, which is now 10 (corresponding
to ES2019).

Bug: chromium:995036, chromium:1009927
Change-Id: Ie6b4c5e2839012f498c2c561c33d811b37749eee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1829713
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701461}

third_party/blink/renderer/devtools/front_end/formatter_worker/AcornTokenizer.js

@@ -11,8 +11,7 @@ FormatterWorker.AcornTokenizer = class {
   constructor(content) {
     this._content = content;
     this._comments = [];
-    this._tokenizer =
-        acorn.tokenizer(this._content, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION, onComment: this._comments});
+    this._tokenizer = acorn.tokenizer(this._content, {onComment: this._comments});
     this._textCursor = new TextUtils.TextCursor(this._content.computeLineEndings());
     this._tokenLineStart = 0;
     this._tokenLineEnd = 0;

third_party/blink/renderer/devtools/front_end/formatter_worker/FormatterWorker.js

@@ -28,8 +28,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-FormatterWorker.ACORN_ECMA_VERSION = 2018;
-
 /**
  * @param {string} mimeType
  * @return {function(string, function(string, ?string, number, number):(!Object|undefined))}
@@ -114,7 +112,7 @@ FormatterWorker.parseJSONRelaxed = function(content) {
  * @param {string} content
  */
 FormatterWorker.evaluatableJavaScriptSubstring = function(content) {
-  const tokenizer = acorn.tokenizer(content, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+  const tokenizer = acorn.tokenizer(content, {});
   let result = '';
   try {
     let token = tokenizer.getToken();
@@ -163,7 +161,7 @@ FormatterWorker.preprocessTopLevelAwaitExpressions = function(content) {
   let root;
   let body;
   try {
-    root = acorn.parse(wrapped, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    root = acorn.parse(wrapped, {});
     body = root.body[0].expression.callee.body;
   } catch (e) {
     postMessage('');
@@ -265,7 +263,7 @@ FormatterWorker.preprocessTopLevelAwaitExpressions = function(content) {
 FormatterWorker.javaScriptIdentifiers = function(content) {
   let root = null;
   try {
-    root = acorn.parse(content, {ranges: false, ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    root = acorn.parse(content, {ranges: false});
   } catch (e) {
   }
 
@@ -370,7 +368,7 @@ FormatterWorker.findLastFunctionCall = function(content) {
     return null;
   }
   try {
-    const tokenizer = acorn.tokenizer(content, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    const tokenizer = acorn.tokenizer(content, {});
     while (tokenizer.getToken().type !== acorn.tokTypes.eof) {
     }
   } catch (e) {
@@ -418,13 +416,13 @@ FormatterWorker.argumentsList = function(content) {
   let parsed = null;
   try {
     // Try to parse as a function, anonymous function, or arrow function.
-    parsed = acorn.parse(`(${content})`, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    parsed = acorn.parse(`(${content})`, {});
   } catch (e) {
   }
   if (!parsed) {
     try {
       // Try to parse as a method.
-      parsed = acorn.parse(`({${content}})`, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+      parsed = acorn.parse(`({${content}})`, {});
     } catch (e) {
     }
   }
@@ -485,7 +483,7 @@ FormatterWorker.findLastExpression = function(content) {
     return null;
   }
   try {
-    const tokenizer = acorn.tokenizer(content, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    const tokenizer = acorn.tokenizer(content, {});
     while (tokenizer.getToken().type !== acorn.tokTypes.eof) {
     }
   } catch (e) {
@@ -494,7 +492,7 @@ FormatterWorker.findLastExpression = function(content) {
 
   const suffix = '.DEVTOOLS';
   try {
-    acorn.parse(content + suffix, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    acorn.parse(content + suffix, {});
   } catch (parseError) {
     // If this is an invalid location for a '.', don't attempt to give autocomplete
     if (parseError.message.startsWith('Unexpected token') && parseError.pos === content.length) {
@@ -524,7 +522,7 @@ FormatterWorker._lastCompleteExpression = function(content, suffix, types) {
     try {
       // Wrap content in paren to successfully parse object literals
       parsedContent = content[i] === '{' ? `(${content.substring(i)})${suffix}` : `${content.substring(i)}${suffix}`;
-      ast = acorn.parse(parsedContent, {ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+      ast = acorn.parse(parsedContent, {});
       break;
     } catch (e) {
     }

third_party/blink/renderer/devtools/front_end/formatter_worker/JavaScriptFormatter.js

@@ -51,8 +51,7 @@ FormatterWorker.JavaScriptFormatter = class {
     this._content = text.substring(this._fromOffset, this._toOffset);
     this._lastLineNumber = 0;
     this._tokenizer = new FormatterWorker.AcornTokenizer(this._content);
-    const ast = acorn.parse(
-        this._content, {ranges: false, ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION, preserveParens: true});
+    const ast = acorn.parse(this._content, {ranges: false, preserveParens: true});
     const walker = new FormatterWorker.ESTreeWalker(this._beforeVisit.bind(this), this._afterVisit.bind(this));
     walker.walk(ast);
   }

third_party/blink/renderer/devtools/front_end/formatter_worker/JavaScriptOutline.js

@@ -11,9 +11,9 @@ FormatterWorker.javaScriptOutline = function(content) {
 
   let ast;
   try {
-    ast = acorn.parse(content, {ranges: false, ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    ast = acorn.parse(content, {ranges: false});
   } catch (e) {
-    ast = acorn.loose.parse(content, {ranges: false, ecmaVersion: FormatterWorker.ACORN_ECMA_VERSION});
+    ast = acorn.loose.parse(content, {ranges: false});
   }
 
   const textCursor = new TextUtils.TextCursor(content.computeLineEndings());