DevTools: include traces when exporting console log via 'Save as'

third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-callstack-in-console-expected.txt

 CONSOLE MESSAGE: line 11: console.clear
 CONSOLE MESSAGE: line 17: console.trace
 CONSOLE ERROR: line 24: Uncaught Error: foo
 CONSOLE MESSAGE: line 29: console.trace
 CONSOLE ERROR: line 37: Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('http://www.example.com') does not match the recipient window's origin ('').
 Tests asynchronous call stacks printed in console.
 
 
 Set timer for test function.
 async-callstack-in-console.html:11 Console was cleared
 async-callstack-in-console.html:17 console.trace
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 timeout1 @ async-callstack-in-console.html:17
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 setTimeout (async)
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 testFunction @ async-callstack-in-console.html:12
 async-callstack-in-console.html:24 Uncaught Error: foo
     at timeout2 (async-callstack-in-console.html:24)
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 timeout2 @ async-callstack-in-console.html:24
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 setTimeout (async)
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 timeout1 @ async-callstack-in-console.html:18
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 setTimeout (async)
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 testFunction @ async-callstack-in-console.html:12
 async-callstack-in-console.html:29 console.trace
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 timeout3 @ async-callstack-in-console.html:29
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 setTimeout (async)
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 timeout2 @ async-callstack-in-console.html:23
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 setTimeout (async)
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 timeout1 @ async-callstack-in-console.html:18
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 setTimeout (async)
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 testFunction @ async-callstack-in-console.html:12
 async-callstack-in-console.html:37 Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('http://www.example.com') does not match the recipient window's origin ('file://').
+
 tryPostMessage @ async-callstack-in-console.html:37
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 timeout3 @ async-callstack-in-console.html:31
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 setTimeout (async)
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 timeout2 @ async-callstack-in-console.html:23
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 setTimeout (async)
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 timeout1 @ async-callstack-in-console.html:18
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 setTimeout (async)
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 testFunction @ async-callstack-in-console.html:12