Add a flag to disable the reporting and generation of hints in the analyzer.
Add a flag to disable the reporting and generation of hints in the analyzer.

I have a pending cl (24454002) which would break the analyzer bot since hints will be generated on langage and co19 where the output is asserted to be clean.

R=ricow@google.com

Review URL: https://codereview.chromium.org//24449004

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@27891 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk