Upgrade Blink to milliseconds-based last modified filetimes, part 2.

Upgrade Blink to milliseconds-based last modified filetimes, part 2.

With WebFileInfo::modificationTimeMS now available, have
content::FileInfoToWebFileInfo() set it accordingly and alongside
modificationTime.

1: [blink] add WebFileInfo::modificationTimeMS [ https://codereview.chromium.org/873723004/ ]
2: [chromium] *this one* [ https://codereview.chromium.org/884413002/ ]
3: [blink] make use of modificationTimeMS [ https://codereview.chromium.org/884393002/ ]
4: [chromium] set modificationTime to something msec-based [ https://codereview.chromium.org/862203003/ ]
5: [blink] switch to using modificationTime instead of *MS [ https://codereview.chromium.org/882343002/ ]
6: [chromium] stop setting modificationTimeMS [ https://codereview.chromium.org/890523002/ ]
7: [blink] remove modificationTimeMS [ https://codereview.chromium.org/869613005/ ]

R=kinuko,jam
BUG=451747
Committed: https://crrev.com/21810c1f4e59ba515a5c7fd22815fb913be48322
Cr-Commit-Position: refs/heads/master@{#314214}

[sof, 2015-01-30 11:19:31]

sigbjornf@opera.com changed reviewers:
+ jochen@chromium.org

[sof, 2015-01-30 11:19:31]

Please take a look.

Just tracking blink updates/changes on the chromium side; as do parts 4 & 6.

[sof, 2015-02-02 11:45:07]

sigbjornf@opera.com changed reviewers:
+ kinuko@chromium.org

[kinuko, 2015-02-02 14:12:22]

lgtm

[sof, 2015-02-02 14:14:11]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-02-02 14:14:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/884413002/1

[commit-bot: I haz the power, 2015-02-02 14:19:56]

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

[commit-bot: I haz the power, 2015-02-02 14:19:57]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[sof, 2015-02-02 14:32:43]

sigbjornf@opera.com changed reviewers:
+ jam@chromium.org

[sof, 2015-02-02 14:32:44]

On 2015/02/02 14:19:57, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   chromium_presubmit on tryserver.chromium.linux
>
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

Needs content/OWNERS approval for this content/child/ change, I'm afraid.

jochen@, jam@: please take a look when there's time?

[jam, 2015-02-02 22:08:08]

lgtm

[sof, 2015-02-02 22:17:12]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-02-02 22:18:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/884413002/1

[commit-bot: I haz the power, 2015-02-02 23:08:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-02 23:09:44]

Patchset 1 (id:??) landed as
https://crrev.com/21810c1f4e59ba515a5c7fd22815fb913be48322
Cr-Commit-Position: refs/heads/master@{#314214}