We are standardizing on the base implementation whenever possible.

Updates typedefs to using statements when code was changed.

file_transfer_message_handler_unittest.cc got a new helper function
since base::queue lacks an operator== required for gtest.

Bug: 757232
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I98d0c6880a5fcf5d236634abca51ba0fe41eeb6c
Reviewed-on: https://chromium-review.googlesource.com/682755


Commit-Queue: Brett Wilson <brettw@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504191}