Got this while building chrome_public_apk today.
Note the last error, OSError: [Errno 2] No such file or directory: '/tmp/tmp_WBWXg.js', which smells like some race in the minification script

Anthony, is it something related with your recent work?

[8925/20126] ACTION //chrome/renderer:resources_grit(//build/toolchain/android:arm)
/tmp/tmpJGlTn1.js:16: ERROR - Parse error. Semi-colon expected
      native function Focus();
             ^

1 error(s), 0 warning(s)


Traceback (most recent call last):
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 47, in <module>
    result = Minify(sys.stdin.read())
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 39, in Minify
    return result
  File "/usr/lib/python2.7/tempfile.py", line 427, in __exit__
    self.close()
  File "/usr/lib/python2.7/tempfile.py", line 418, in close
    self.unlink(self.name)
OSError: [Errno 2] No such file or directory: '/tmp/tmpjI6kZV.js'

Minification failed, using original source
/tmp/tmp140cMq.js:16: ERROR - Parse error. Semi-colon expected
      native function Focus();
             ^

1 error(s), 0 warning(s)


Traceback (most recent call last):
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 47, in <module>
    result = Minify(sys.stdin.read())
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 39, in Minify
    return result
  File "/usr/lib/python2.7/tempfile.py", line 427, in __exit__
    self.close()
  File "/usr/lib/python2.7/tempfile.py", line 418, in close
    self.unlink(self.name)
OSError: [Errno 2] No such file or directory: '/tmp/tmpYchmow.js'

Minification failed, using original source
/tmp/tmpEpdJyG.js:16: ERROR - Parse error. Semi-colon expected
      native function Focus();
             ^

1 error(s), 0 warning(s)


Traceback (most recent call last):
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 47, in <module>
    result = Minify(sys.stdin.read())
  File "/s/chrome/src/third_party/closure_compiler/js_minify.py", line 39, in Minify
    return result
  File "/usr/lib/python2.7/tempfile.py", line 427, in __exit__
    self.close()
  File "/usr/lib/python2.7/tempfile.py", line 418, in close
    self.unlink(self.name)
OSError: [Errno 2] No such file or directory: '/tmp/tmp_WBWXg.js'