There are following changes:
1. DEPS to pull in test_reflective_loader 0.0.4
2. Rename runReflectiveTests() to defineReflectiveTests().
3. Remove analyzer's pkg/analyzer/test/reflective_tests.dart
4. Replace reflective_tests.dart imports with package:test_reflective_loader/test_reflective_loader.dart imports.
5. Sort/format and organize imports in the files with imports changes.
6. Fix for a couple of bugs in analysis_server exposed by the new loader.
R=brianwilkerson@google.com
BUG=
Review URL: https://codereview.chromium.org/2298913003 .
Brian Wilkerson