The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/11a07f288fe1590b41452214f16d1777706046b9

commit 11a07f288fe1590b41452214f16d1777706046b9
Author: rdevlin.cronin <rdevlin.cronin@chromium.org>
Date: Fri Sep 09 03:10:19 2016

[Extensions] Add metrics for renderer sync IPCs performance

In the renderer, extensions use sync IPCs to request port ids and
request the i18n message bundle. We're looking into fixing this, but
it'll be useful to know how much time it's taking now.

BUG= 645261 

Review-Url: https://codereview.chromium.org/2316093004
Cr-Commit-Position: refs/heads/master@{#417489}

[modify] https://crrev.com/11a07f288fe1590b41452214f16d1777706046b9/chrome/renderer/extensions/tabs_custom_bindings.cc
[modify] https://crrev.com/11a07f288fe1590b41452214f16d1777706046b9/extensions/renderer/i18n_custom_bindings.cc
[modify] https://crrev.com/11a07f288fe1590b41452214f16d1777706046b9/extensions/renderer/runtime_custom_bindings.cc
[modify] https://crrev.com/11a07f288fe1590b41452214f16d1777706046b9/tools/metrics/histograms/histograms.xml

Requesting merge so we can get a bit more data.

Your change meets the bar and is auto-approved for M54 (branch: 2840)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5b31379bc1607d5edbb8bcc15256527322849121

commit 5b31379bc1607d5edbb8bcc15256527322849121
Author: Devlin Cronin <rdevlin.cronin@chromium.org>
Date: Mon Sep 12 16:45:05 2016

[Extensions] Add metrics for renderer sync IPCs performance

In the renderer, extensions use sync IPCs to request port ids and
request the i18n message bundle. We're looking into fixing this, but
it'll be useful to know how much time it's taking now.

BUG= 645261 

Review-Url: https://codereview.chromium.org/2316093004
Cr-Commit-Position: refs/heads/master@{#417489}
(cherry picked from commit 11a07f288fe1590b41452214f16d1777706046b9)

Review URL: https://codereview.chromium.org/2335713002 .

Cr-Commit-Position: refs/branch-heads/2840@{#302}
Cr-Branched-From: 1ae106dbab4bddd85132d5b75c670794311f4c57-refs/heads/master@{#414607}

[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/chrome/renderer/extensions/tabs_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/extensions/renderer/i18n_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/extensions/renderer/runtime_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5b31379bc1607d5edbb8bcc15256527322849121

commit 5b31379bc1607d5edbb8bcc15256527322849121
Author: Devlin Cronin <rdevlin.cronin@chromium.org>
Date: Mon Sep 12 16:45:05 2016

[Extensions] Add metrics for renderer sync IPCs performance

In the renderer, extensions use sync IPCs to request port ids and
request the i18n message bundle. We're looking into fixing this, but
it'll be useful to know how much time it's taking now.

BUG= 645261 

Review-Url: https://codereview.chromium.org/2316093004
Cr-Commit-Position: refs/heads/master@{#417489}
(cherry picked from commit 11a07f288fe1590b41452214f16d1777706046b9)

Review URL: https://codereview.chromium.org/2335713002 .

Cr-Commit-Position: refs/branch-heads/2840@{#302}
Cr-Branched-From: 1ae106dbab4bddd85132d5b75c670794311f4c57-refs/heads/master@{#414607}

[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/chrome/renderer/extensions/tabs_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/extensions/renderer/i18n_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/extensions/renderer/runtime_custom_bindings.cc
[modify] https://crrev.com/5b31379bc1607d5edbb8bcc15256527322849121/tools/metrics/histograms/histograms.xml