Stop FaviconHandler from querying GetActiveFaviconValidity() part 1/2

Stop FaviconHandler from querying GetActiveFaviconValidity() part 1/2

The combination of:
- The existence of |FaviconHandler::history_results_|
- The checking against duplicate calls to FaviconHandler::OnUpdateFaviconURL()
  introduced in https://codereview.chromium.org/1295733002
makes the GetActiveFaviconValidity() / GetActiveFaviconURL() check in
FaviconHandler::ProcessCurrentUrl() unnecessary

BUG=517089
Committed: https://crrev.com/72de4d975e886d4ce0337b28e8613c5d27c53d6f
Cr-Commit-Position: refs/heads/master@{#353817}

[pkotwicz, 2015-10-11 03:14:12]

Patchset #1 (id:1) has been deleted

[pkotwicz, 2015-10-11 03:22:30]

pkotwicz@chromium.org changed reviewers:
+ sky@chromium.org

[pkotwicz, 2015-10-11 03:42:32]

pkotwicz@chromium.org changed reviewers:
- sky@chromium.org

[pkotwicz, 2015-10-11 03:47:52]

pkotwicz@chromium.org changed reviewers:
+ sky@chromium.org

[pkotwicz, 2015-10-11 03:47:52]

Scott, can you please take a look?

[sky, 2015-10-12 15:57:31]

LGTM

[pkotwicz, 2015-10-13 14:49:52]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2015-10-13 14:55:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1396133003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1396133003/20001

[commit-bot: I haz the power, 2015-10-13 18:04:29]

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

[commit-bot: I haz the power, 2015-10-13 18:04:29]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[pkotwicz, 2015-10-13 18:13:23]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2015-10-13 18:16:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1396133003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1396133003/20001

[commit-bot: I haz the power, 2015-10-13 19:16:50]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2015-10-13 19:17:27]

Patchset 1 (id:??) landed as
https://crrev.com/72de4d975e886d4ce0337b28e8613c5d27c53d6f
Cr-Commit-Position: refs/heads/master@{#353817}