Revert of [inspector] avoid cloning of async call chains

test/inspector/debugger/collect-old-async-call-chains.js

Index: test/inspector/debugger/collect-old-async-call-chains.js
diff --git a/test/inspector/debugger/collect-old-async-call-chains.js b/test/inspector/debugger/collect-old-async-call-chains.js
deleted file mode 100644
index f96df88fd5e152c29a32d26747703237ed53381e..0000000000000000000000000000000000000000
--- a/test/inspector/debugger/collect-old-async-call-chains.js
+++ /dev/null
@@ -1,171 +0,0 @@
-// Copyright 2017 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-InspectorTest.log('Checks that we drop old async call chains.');
-
-Protocol.Debugger.enable();
-Protocol.Runtime.enable();
-InspectorTest.runAsyncTestSuite([
-  async function testInfrastructure() {
-    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainPromise(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainPromise(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainPromise(5, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(1024);
-    runWithAsyncChainSetTimeout(5, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-  },
-
-  async function testZeroLimit() {
-    const limit = 0;
-    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-  },
-
-  async function testOneLimit() {
-    const limit = 1;
-    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-  },
-
-  async function testTwoLimit() {
-    const limit = 2;
-    Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainPromise(3, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(1, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(2, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-    await setMaxAsyncTaskStacks(limit);
-    runWithAsyncChainSetTimeout(3, 'console.trace(42)');
-    dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-  },
-
-  async function testMoreThanTwoLimit() {
-    for (let limit = 3; limit <= 7; ++limit) {
-      Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainPromise(1, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainPromise(2, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainPromise(3, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainSetTimeout(1, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainSetTimeout(2, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-
-      await setMaxAsyncTaskStacks(limit);
-      runWithAsyncChainSetTimeout(3, 'console.trace(42)');
-      dumpAsyncChainLength(await Protocol.Runtime.onceConsoleAPICalled());
-    }
-  },
-]);
-
-function runWithAsyncChainPromise(len, source) {
-  InspectorTest.log(`Run expression '${source}' with async chain len: ${len}`);
-  let then = '.then(() => 1)';
-  let pause = `.then(() => { ${source} })`;
-  Protocol.Runtime.evaluate({
-    expression: `Promise.resolve()${then.repeat(len - 1)}${pause}`
-  });
-}
-
-function runWithAsyncChainSetTimeout(len, source) {
-  InspectorTest.log(`Run expression '${source}' with async chain len: ${len}`);
-  let setTimeoutPrefix = '() => setTimeout(';
-  let setTimeoutSuffix = ', 0)';
-  Protocol.Runtime.evaluate({
-    expression: `setTimeout(${setTimeoutPrefix.repeat(len - 1)}'${source}'${setTimeoutSuffix.repeat(len - 1)}, 0)`
-  });
-}
-
-function dumpAsyncChainLength(message) {
-  let stackTrace = message.params.asyncStackTrace || message.params.stackTrace.parent;
-  let asyncChainCount = 0;
-  while (stackTrace) {
-    ++asyncChainCount;
-    stackTrace = stackTrace.parent;
-  }
-  InspectorTest.log(`actual async chain len: ${asyncChainCount}\n`);
-}
-
-async function setMaxAsyncTaskStacks(max) {
-  let expression = `setMaxAsyncTaskStacks(${max})`;
-  InspectorTest.log(expression);
-  await Protocol.Runtime.evaluate({expression});
-}