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Move GPU.SupportsDX12 and GPU.D3D12FeatureLevel from the GPU process to
the browser process.

These two histograms are lost when they are recorded in the
info-collection GPU process. They are not allocated in the persistent
histogram memory and the GPU process is terminated right after the
histogram data is written. To preserve the data, we now record the
histograms in the browser process.

Bug: 775983, 1149617
Change-Id: Ia31195cfe5cc9a6ac86de830b53046285a49843e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2542364Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Maggie Chen <magchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828030}