Removes annotations of "GYP version" from GN targets.
Removes shell.exe.manifest which was used only by the GYP build.
TBR=dpranke@chromium.org
CQ_INCLUDE_TRYBOTS=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
Review-Url: https://codereview.chromium.org/2373683003
Cr-Original-Commit-Position: refs/heads/master@{#421335}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: cde1af7bd0ccf5b051bd3bac47290e15d8a0ef29
5e4ffb5c89