GitLab

This CL introduces rendering benchmarks that incorporate both smoothness
and thread_times measurements. The benchmarks are split into two page
sets, desktop and mobile, in which all smoothness page sets will be
consolidated.

To begin, rendering.desktop contains top_25_smooth pages, and
rendering.mobile contains top_25_smooth (default and gpu_raster) and
key_mobile_sites_smooth (default and sync_scroll). More page sets will
be merged into these over time.

Bug: 760553
Change-Id: I8179a14d9b9af96be509a63112fd9bf879e0bcf6
Reviewed-on: https://chromium-review.googlesource.com/821473
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#546642}