platform2: Replace 'OVERRIDE' with 'override' and fix linter

Replace OVERRIDE macro with native C++ 'override' keyword.
Also fixed the style issue of using both 'override' and 'virtual'
on member function overrides. Only one is required and cpplint
complains if both are specified now.

TEST=Build all affected target and ran unit tests which passed.

Change-Id: I04474aacad2ca8d6c6042c84a5378961d5bd8bf2
Reviewed-by: Alex Vakulenko <>
Commit-Queue: Alex Vakulenko <>
Tested-by: Alex Vakulenko <>
3 files changed
tree: 07e7fe1a2c2ce2f74aa73e1d6d938192a80afcb7
  1. crash_reporter/