Add equality comparison to EqualToTolowerString.

Chromium browser tests on Windows in debug mode have exposed that
std::equal is not safe. It should be used only after a length
comparison. (Bot failures can be seen at http://goo.gl/qvaBg3,
http://goo.gl/j89rgZ, and http://goo.gl/CxcyYm.)

TBR=roubert@google.com

Review URL: https://codereview.appspot.com/106480044
1 file changed
tree: 2c17d98bc173e113b95fc888dd73283d9345bfb3
  1. cpp/
  2. externals/
  3. java/
  4. testdata/
  5. .gitmodules
  6. codereview.settings