[DevTools] Migrate inspector-protocol/debugger tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-in-tight-loop.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('');
+
+  await dp.Runtime.enable();
+  await dp.Debugger.enable();
+
+  // Start tight loop in page.
+  session.evaluate(`
+    var terminated = false;
+    function hotFunction() {
+      console.log('hi');
+      var message_id = 1;
+      var ts = Date.now();
+      while (!terminated) {
+        // Without this try/catch v8 will optimize the function and break will not work.
+        try {
+          if (Date.now() - ts > 1000) {
+            ts = Date.now();
+            console.error('Message #' + message_id++);
+          }
+        } catch (e) {
+        }
+      }
+    }
+    setTimeout(hotFunction, 0);
+  `);
+  testRunner.log('didEval');
+
+  await dp.Runtime.onceConsoleAPICalled();
+  testRunner.log('didFireTimer');
+
+  dp.Debugger.pause();
+  await dp.Debugger.oncePaused();
+  testRunner.log('SUCCESS: Paused');
+
+  dp.Runtime.evaluate({expression: 'terminated = true;' });
+  dp.Debugger.resume();
+  await dp.Debugger.onceResumed();
+  testRunner.log('SUCCESS: Resumed');
+  testRunner.completeTest();
+})