Use a more compact license header in source files.

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: bf09a5036ccfb77d2277247c66dc55daf41df3fe
7 files changed
tree: bb1787b5465a963d9829583fb35524a0b06865be
  1. google/