Describe how to get build log in chrome-trace format

skange · Dec 28, 2018 · e21f414 · e21f414
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+To obtain the build trace in Chrome-trace format you need to do the following:
+- ninja -C ${BUILD_DIR}
+- ninjatrace ${BUILD_DIR}/.ninja_log > ninja_trace.json
+
+You can get `ninjatrace` from https://github.com/nico/ninjatracing.git - also there is a more detailed instruction.