Add memory info to benchmarks page.

[annxingyuan]

Adds trendlines to track memory usage - they look like this:

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This change is 

[nsthorat]

Reviewed 1 of 1 files at r1.
Reviewable status: complete! 1 of 1 approvals obtained (waiting on @annxingyuan, @dsmilkov, and @nsthorat)

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benchmarks/index.html, line 477 at r1 (raw file):

      }

      populateTrendline(document.querySelector("#perf-trendline-container"), times, true, printTime);

pull true and false to named constants

[annxingyuan]

Reviewable status: complete! 1 of 1 approvals obtained (waiting on @dsmilkov)

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benchmarks/index.html, line 477 at r1 (raw file):

Previously, nsthorat (Nikhil Thorat) wrote…

pull true and false to named constants

Done

[nsthorat]

Fixed the flaky test, you can update this branch and the tests should succeed.