Add month and year to time_format.

Add month and year to time_format.

Add the possibility to have month and years in time format.
A year is defined as 365 days.
A month is defined as 1year / 12.

'1 month' means more than one month and less than two month (same for
years).

CL mainly made by olivierrobin

BUG=694451
Review-Url: https://codereview.chromium.org/2845693002
Cr-Commit-Position: refs/heads/master@{#467625}
(cherry picked from commit bef90b8dea482e8a4801f9c9c0543ab35ef2fd9f)

Review-Url: https://codereview.chromium.org/2856143002 .
Cr-Commit-Position: refs/branch-heads/3071@{#371}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/050c89a59b81cfd885b3f13054033a39b8cb0428

[gambard, 2017-05-03 10:20:49]

Description was changed from

==========
Add month and year to time_format.

Add the possibility to have month and years in time format.
A year is defined as 365 days.
A month is defined as 1year / 12.

'1 month' means more than one month and less than two month (same for
years).

CL mainly made by olivierrobin

BUG=694451

Review-Url: https://codereview.chromium.org/2845693002
Cr-Commit-Position: refs/heads/master@{#467625}
(cherry picked from commit bef90b8dea482e8a4801f9c9c0543ab35ef2fd9f)
==========

to

==========
Add month and year to time_format.

Add the possibility to have month and years in time format.
A year is defined as 365 days.
A month is defined as 1year / 12.

'1 month' means more than one month and less than two month (same for
years).

CL mainly made by olivierrobin

BUG=694451

Review-Url: https://codereview.chromium.org/2845693002
Cr-Commit-Position: refs/heads/master@{#467625}
(cherry picked from commit bef90b8dea482e8a4801f9c9c0543ab35ef2fd9f)

Review-Url: https://codereview.chromium.org/2856143002 .
Cr-Commit-Position: refs/branch-heads/3071@{#371}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/050c89a59b81cfd885b3f1305403...
==========

[gambard, 2017-05-03 10:20:51]

Committed patchset #1 (id:1) manually as
050c89a59b81cfd885b3f13054033a39b8cb0428.