am fd43aa8a: Merge "Fix writing clean_steps.mk in the first build."
am fd43aa8a: Merge "Fix writing clean_steps.mk in the first build."

* commit 'fd43aa8a02d8415121694b4edd15ea8d549a7d3d':
  Fix writing clean_steps.mk in the first build.

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build