toolchain-utils: add block list for histograms output

Histograms of some tests such as loading.desktop are very different from
their chart-json counterpart. It seems it is almost impossible to parse
these tests without case-by-case parsing. Parse chart-json output of these tests instead.

BUG=chromium:984713

TEST=local tests

Change-Id: I225567a1be9d401b5dd0c1f682184e581ac4acce
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/1714125
Tested-by: Jian Cai <jiancai@google.com>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
1 file changed