Issue 688371 has been merged into this issue.

There are two cases that shows the broken favicon, one is having the stale img url, another is loading a page that does not have an icon.

We should also handle the second cases.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9202c88ac94265dc91315fe2f3b8c1341e9b1e35

commit 9202c88ac94265dc91315fe2f3b8c1341e9b1e35
Author: ranj <ranj@chromium.org>
Date: Wed Mar 01 18:40:16 2017

Change scantimestamp to firstseentimestamp.

Garbage collector uses this field to check for expiration, before we name
it scantimestamp and keep updating it, so the record may never be expired.

BUG= 682244 

Review-Url: https://codereview.chromium.org/2711683003
Cr-Commit-Position: refs/heads/master@{#453979}

[modify] https://crrev.com/9202c88ac94265dc91315fe2f3b8c1341e9b1e35/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/UrlInfo.java
[modify] https://crrev.com/9202c88ac94265dc91315fe2f3b8c1341e9b1e35/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/UrlManager.java
[modify] https://crrev.com/9202c88ac94265dc91315fe2f3b8c1341e9b1e35/chrome/android/javatests/src/org/chromium/chrome/browser/physicalweb/UrlManagerTest.java
[modify] https://crrev.com/9202c88ac94265dc91315fe2f3b8c1341e9b1e35/chrome/android/junit/src/org/chromium/chrome/browser/physicalweb/UrlInfoTest.java

This bug requires manual review: We are only 11 days from stable.
Please contact the milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Merge rejected - we are too close to our stable release to take Pri-2 fixes, and after checking with cco3@ this is not critical.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060

commit 23c9664fcc2ffd6bdcffbca5355ba4cd083f7060
Author: ranj <ranj@chromium.org>
Date: Thu Mar 30 03:45:22 2017

Show a default URL icon instead of a broken image for urls with no icon.

BUG= 682244 

Review-Url: https://codereview.chromium.org/2717363003
Cr-Commit-Position: refs/heads/master@{#460648}

[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/chrome/browser/ui/webui/physical_web/physical_web_ui.cc
[add] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/components/physical_web/resources/ic_link_grey600_36dp.png
[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/components/physical_web/webui/physical_web_ui_constants.cc
[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/components/physical_web/webui/physical_web_ui_constants.h
[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/components/physical_web/webui/resources/physical_web.js
[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/components/resources/physical_web_ui_resources.grdp
[modify] https://crrev.com/23c9664fcc2ffd6bdcffbca5355ba4cd083f7060/ios/chrome/browser/ui/webui/physical_web_ui.cc