The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/30d1d8a1cee78354f94c9ec3baa91b893be13614

commit 30d1d8a1cee78354f94c9ec3baa91b893be13614
Author: Yuke Liao <liaoyuke@chromium.org>
Date: Thu Sep 21 16:55:55 2017

[Coverage] Generate per directory line coverage report.

This CL generates per-directory line coverage breakdown report. This CL
only cares about generating the data, and in terms of displaying, it
will be handled in a separate CL.

Bug:  764099 
Change-Id: I188168501257a6611db21cdc41c375e7e681a590
Reviewed-on: https://chromium-review.googlesource.com/671848
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#503474}
[modify] https://crrev.com/30d1d8a1cee78354f94c9ec3baa91b893be13614/ios/tools/coverage/coverage.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4ec28240972a5eae57279dc7309319016ba35629

commit 4ec28240972a5eae57279dc7309319016ba35629
Author: Yuke Liao <liaoyuke@chromium.org>
Date: Mon Sep 25 06:55:16 2017

[Coverage] Generate line by line file coverage in html.

This CL generates detailed line-by-line coverage reports in html for
files.

Bug:  764099 
Change-Id: I68addbdcc0dced4aa4fb486b14e4fb3b875eb24a
Reviewed-on: https://chromium-review.googlesource.com/667791
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#503994}
[modify] https://crrev.com/4ec28240972a5eae57279dc7309319016ba35629/ios/tools/coverage/coverage.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ce4491ed67d8be685e42aeb31f52fc410cd8e34f

commit ce4491ed67d8be685e42aeb31f52fc410cd8e34f
Author: Yuke Liao <liaoyuke@chromium.org>
Date: Mon Oct 02 06:35:04 2017

[Coverage] Support generating per directory code coverage data.

This CL adds support to code coverage script to display per directory
code coverage breakdown.

Bug:  764099 
Change-Id: Iff9b5439e19cab89df09c93f7bb6fa19a9e89872
Reviewed-on: https://chromium-review.googlesource.com/688739
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505546}
[modify] https://crrev.com/ce4491ed67d8be685e42aeb31f52fc410cd8e34f/ios/tools/coverage/coverage.py
[add] https://crrev.com/ce4491ed67d8be685e42aeb31f52fc410cd8e34f/ios/tools/coverage/example.html
[add] https://crrev.com/ce4491ed67d8be685e42aeb31f52fc410cd8e34f/ios/tools/coverage/html_templates/footer.html
[add] https://crrev.com/ce4491ed67d8be685e42aeb31f52fc410cd8e34f/ios/tools/coverage/html_templates/header.html
[add] https://crrev.com/ce4491ed67d8be685e42aeb31f52fc410cd8e34f/ios/tools/coverage/html_templates/table.html