keep the order of the events that have the same timestamp

[hwajaywang]

fix import trace event error while the event have the same timestamp.
like this:
[
{"tid": 1, "ph": "B", "pid": 0, "name": "Looper:dispatch(Loope)", "ts": 0},
{"tid": 1, "ph": "B", "pid": 0, "name": "MainActivity:onCreate(com.bytedance.android.app)", "ts": 8},
{"tid": 1, "ph": "B", "pid": 0, "name": "MainActivity:sayHello2(com.bytedance.android.app)", "ts": 22},
{"tid": 1, "ph": "B", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 22},
{"tid": 1, "ph": "E", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 54},
{"tid": 1, "ph": "B", "pid": 0, "name": "Speaker:sayHello(com.bytedance.android.app)", "ts": 58},
{"tid": 1, "ph": "B", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 58},
{"tid": 1, "ph": "E", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 64},
{"tid": 1, "ph": "E", "pid": 0, "name": "Speaker:sayHello(com.bytedance.android.app)", "ts": 64},
{"tid": 1, "ph": "E", "pid": 0, "name": "MainActivity:sayHello2(com.bytedance.android.app)", "ts": 65},
{"tid": 1, "ph": "E", "pid": 0, "name": "MainActivity:onCreate(com.bytedance.android.app)", "ts": 65},
{"tid": 1, "ph": "E", "pid": 0, "name": "Looper:dispatch(Loope)", "ts": 74},
{"tid": 1, "ph": "B", "pid": 0, "name": "Choreographer:doFrame(Choreographe)", "ts": 74},
{"tid": 1, "ph": "B", "pid": 0, "name": "BlockTextView:draw(com.bytedance.android.app.trace)", "ts": 91},
{"tid": 1, "ph": "B", "pid": 0, "name": "BlockTextView:onDraw(com.bytedance.android.app.trace)", "ts": 92},
{"tid": 1, "ph": "B", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 92},
{"tid": 1, "ph": "E", "pid": 0, "name": "Block:block(com.bytedance.android.app.trace)", "ts": 128},
{"tid": 1, "ph": "E", "pid": 0, "name": "BlockTextView:onDraw(com.bytedance.android.app.trace)", "ts": 128},
{"tid": 1, "ph": "E", "pid": 0, "name": "BlockTextView:draw(com.bytedance.android.app.trace)", "ts": 132},
{"tid": 1, "ph": "E", "pid": 0, "name": "Choreographer:doFrame(Choreographe)", "ts": 146}
]

[coveralls]

Coverage remained the same at 47.016% when pulling ce28136 on hwajaywang:master into bdd9301 on jlfwong:master.

[jlfwong]

Hi @hwajaywang!

Thanks for the report of the issue. I have a slightly different fix, and I'd like to include a new test in the PR that resolves this, so I'm going to close this PR and follow up soon with a new fix. This issue is now tracked as #251.

[jlfwong]

This should be fixed in 1.5.3 on npm, and on https://www.speedscope.app/. Thanks again for your contribution!