Mojo EDK: Reduce unused read buffer capacity

Mojo EDK: Reduce unused read buffer capacity

Reduces the unused read buffer capacity from 64k to 4k.

A simple empirical measurement shows that ~90% of all
messages received by the browser in a "typical" browsing
session are no larger than 4k, so the extra allocations here
should not have a significant performance impact.

BUG=692369
Review-Url: https://codereview.chromium.org/2701513005
Cr-Commit-Position: refs/heads/master@{#451209}
Committed: https://chromium.googlesource.com/chromium/src/+/adb217e7938f1f84c3f528bec160f9cfa35fb74d

[Ken Rockot(use gerrit already), 2017-02-16 23:27:02]

The CQ bit was checked by rockot@chromium.org to run a CQ dry run

[Ken Rockot(use gerrit already), 2017-02-16 23:27:24]

rockot@chromium.org changed reviewers:
+ yzshen@chromium.org

[Ken Rockot(use gerrit already), 2017-02-16 23:27:25]

PTAL

[commit-bot: I haz the power, 2017-02-16 23:28:14]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[yzshen1, 2017-02-16 23:28:53]

lgtm

[commit-bot: I haz the power, 2017-02-17 02:26:56]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-02-17 02:26:57]

Dry run: This issue passed the CQ dry run.

[Ken Rockot(use gerrit already), 2017-02-17 02:41:53]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2017-02-17 02:42:49]

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, 2017-02-17 04:30:34]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487299313553330, "parent_rev":
"f6fb3e420e012be507b027e747dc819d7fb4da73", "commit_rev":
"adb217e7938f1f84c3f528bec160f9cfa35fb74d"}

[commit-bot: I haz the power, 2017-02-17 04:31:32]

Description was changed from

==========
Mojo EDK: Reduce unused read buffer capacity

Reduces the unused read buffer capacity from 64k to 4k.

A simple empirical measurement shows that ~90% of all
messages received by the browser in a "typical" browsing
session are no larger than 4k, so the extra allocations here
should not have a significant performance impact.

BUG=692369
==========

to

==========
Mojo EDK: Reduce unused read buffer capacity

Reduces the unused read buffer capacity from 64k to 4k.

A simple empirical measurement shows that ~90% of all
messages received by the browser in a "typical" browsing
session are no larger than 4k, so the extra allocations here
should not have a significant performance impact.

BUG=692369

Review-Url: https://codereview.chromium.org/2701513005
Cr-Commit-Position: refs/heads/master@{#451209}
Committed:
https://chromium.googlesource.com/chromium/src/+/adb217e7938f1f84c3f528bec160...
==========

[commit-bot: I haz the power, 2017-02-17 04:31:33]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/adb217e7938f1f84c3f528bec160...