Handle PhantomJS 1.x file:/// urls

[benvinegar]

I discovered that we were dropping frames from PhantomJS – specifically those without method names and begining with file:///

cc @mattrobenolt

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This change is

[benvinegar]

Review status: 0 of 3 files reviewed at latest revision, 1 unresolved discussion.

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test/vendor/tracekit-parser.test.js, line 269 [r1] (raw file):

            var stackFrames = TraceKit.computeStackTrace(CapturedExceptions.PHANTOMJS_1_19);
            assert.ok(stackFrames);
            assert.deepEqual(stackFrames.stack.length, 3);

Oops, forgot some assertions here

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