Tests that console.group/groupEnd messages won't be coalesced. Bug 56114. Bug 63521.

console-nested-group.js:12 outer group console-message-wrapper console-group-title console-from-api console-info-level > console-message
console-nested-group.js:13 inner group console-message-wrapper console-group-title console-from-api console-info-level > console-message
console-nested-group.js:14 Message inside inner group console-message-wrapper console-from-api console-info-level > console-message
console-nested-group.js:17 Message that must not be in any group console-message-wrapper console-from-api console-info-level > console-message
console-nested-group.js:22 One of several groups which shouldn't be coalesced. console-message-wrapper console-group-title console-from-api console-info-level > console-message
console-nested-group.js:22 One of several groups which shouldn't be coalesced. console-message-wrapper console-group-title console-from-api console-info-level > console-message
console-nested-group.js:22 One of several groups which shouldn't be coalesced. console-message-wrapper console-group-title console-from-api console-info-level > console-message
console-nested-group.js:24 Message inside third group console-message-wrapper console-from-api console-info-level > console-message