Android O MR1 SDK.

This updates:
 - build-tools to 27.0.1
 - platforms to 27
 - tools to 26.1.1

TBR=agrieve@chromium.org
Bug: 782848
Change-Id: I55c5facdd3f85024af93d62965596566aa9a40a6
Reviewed-on: https://chromium-review.googlesource.com/784090
Reviewed-by: John Budorick <jbudorick@chromium.org>
11032 files changed
tree: 4e1a8e304ac4d05a3227b1a0a0851d045412bf55
  1. sdk/
  2. .gitignore
  3. codereview.settings
  4. DEPS
  5. LICENSE
  6. OWNERS
  7. README.chromium