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The existing setup of enabling code coverage in try builder is
incorrect, and this CL fixes the issue with the following steps:
1. 'Win x64 Builder', 'Win10 x64 Release (NVIDIA)' and
   'Win10 Tests x64' have isolate_profile_data mixin.
2. 'win10_chromium_x64_rel_ng' is switched to mirror the builders
   mentioned in 1 instead of their code coverage counterparts.
3. Remove the code coverage counterparts of the builders in 1.

Bug: 1004523
Change-Id: I34348739e7ef9ea608593ba75f31781d1b84d486
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2197858
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Auto-Submit: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789681}