Fix links to memory-infra README and add a note about reading traces.

Fix links to memory-infra README and add a note about reading traces.

I noticed this when trying to answer the questions in crbug.com/737264.

Review-Url: https://codereview.chromium.org/2955413002
Cr-Commit-Position: refs/heads/master@{#484655}
Committed: https://chromium.googlesource.com/chromium/src/+/a65c32fc1cc1dd2b59f0ee82df50404603824720

[sullivan, 2017-06-28 19:27:14]

sullivan@chromium.org changed reviewers:
+ primiano@chromium.org

[sullivan, 2017-07-05 19:21:25]

sullivan@chromium.org changed reviewers:
+ erikchen@chromium.org

[sullivan, 2017-07-05 19:21:26]

ping?

[erikchen, 2017-07-06 17:23:34]

lgtm

[erikchen, 2017-07-06 17:23:44]

On 2017/07/06 17:23:34, erikchen wrote:
> lgtm

sorry, please ping after 24-hours.

[sullivan, 2017-07-06 17:24:14]

The CQ bit was checked by sullivan@chromium.org

[commit-bot: I haz the power, 2017-07-06 17:24:36]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-07-06 17:39:06]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1499361854706040, "parent_rev":
"f9e21f7d006de6ca4c26b3a1e97c65380d36cc62", "commit_rev":
"a65c32fc1cc1dd2b59f0ee82df50404603824720"}

[commit-bot: I haz the power, 2017-07-06 17:39:18]

Description was changed from

==========
Fix links to memory-infra README and add a note about reading traces.

I noticed this when trying to answer the questions in crbug.com/737264.
==========

to

==========
Fix links to memory-infra README and add a note about reading traces.

I noticed this when trying to answer the questions in crbug.com/737264.

Review-Url: https://codereview.chromium.org/2955413002
Cr-Commit-Position: refs/heads/master@{#484655}
Committed:
https://chromium.googlesource.com/chromium/src/+/a65c32fc1cc1dd2b59f0ee82df50...
==========

[commit-bot: I haz the power, 2017-07-06 17:39:19]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/a65c32fc1cc1dd2b59f0ee82df50...