Auto merge of #5763 - mbrubeck:trace-layout-readme, r=glennw

r? @glennw

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bors-servo 2015-04-20 16:50:12 -05:00
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To generate a layout trace: To generate a layout trace:
./servo --trace-layout url ./mach run -Z trace-layout <url>
A layout_trace.json file will be writtent to the current directory that can be loaded by the viewer. A layout_trace.json file will be writtent to the current directory that can be loaded by the viewer.