Pull src/chrome/test/data/perf/canvas_bench in test builds.
Pull src/chrome/test/data/perf/canvas_bench in test builds.

Needed by smoothness.tough_canvas_cases when running telemetry from DUT.

We are making telemetry runnable from clients/DUTs. However, there are some missing files which are required by smoothness.tough_canvas_cases. Since the size of the dependencies are not large (20MB) and they are only bundled on test builds, the proposed change is to pull the folder into the test image.

BUG=chromium:557569
TEST=test_that [DUT's address] telemetry_Crosperf \
     --args=" run_local=true test=smoothness.tough_canvas_cases "

Review URL: https://codereview.chromium.org/1456893002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#360783}

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