Use DISALLOW_COPY_AND_ASSIGN consistently everywhere.

Using this macro consistently for all classes that are not abstract or
explicitly intended to be copyable can help preventing bugs.

R=rouslan@chromium.org
BUG=

Review URL: https://codereview.appspot.com/124170043
11 files changed
tree: 9f930bc427746777ea71c37dd81b1800783a5faf
  1. cpp/
  2. externals/
  3. java/
  4. testdata/
  5. .gitmodules
  6. codereview.settings