Omnibox - Code Cleanup - Remove Unnecessary is_history_what_you_typed_match

Omnibox - Code Cleanup - Remove Unnecessary is_history_what_you_typed_match

I audited the code in the process of removing this.  It seems safe to me.

Note that HistoryURL provider isn't the only provider to create a match
of type URL_WHAT_YOU_TYPED--ZeroSuggest does too.  I thought about
creating a helper function that tests for URL_WHAT_YOU_TYPED from the
HistoryURL provider and using that where is_history_what_you_typed_match
is currently used.  Doing so would be exactly equivalent to the current
logic.  However, I looked at all the places is_history_what_you_typed_match
is used, and I see no harm in doing the simpler test (i.e., check only for
URL_WHAT_YOU_TYPED, not URL_WHAT_YOU_TYPED from HistoryURL provider).

TBR=estade
for trivial change to omnibox.js

BUG=471360
Committed: https://crrev.com/13a6e5b3ce19c0282b06cf15c13dc6356ea85259
Cr-Commit-Position: refs/heads/master@{#330843}

[Mark P, 2015-05-20 18:08:01]

mpearson@chromium.org changed reviewers:
+ pkasting@chromium.org

[Mark P, 2015-05-20 18:08:21]

Peter, please take a look.

thanks,
mark

[Peter Kasting, 2015-05-20 20:07:37]

LGTM

[Mark P, 2015-05-20 20:25:32]

The CQ bit was checked by mpearson@chromium.org

[commit-bot: I haz the power, 2015-05-20 20:26:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1129733006/1

[commit-bot: I haz the power, 2015-05-20 20:40:08]

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

[commit-bot: I haz the power, 2015-05-20 20:40:08]

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

[Mark P, 2015-05-20 20:41:47]

The CQ bit was checked by mpearson@chromium.org

[commit-bot: I haz the power, 2015-05-20 20:42:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1129733006/1

[commit-bot: I haz the power, 2015-05-20 23:37:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-20 23:38:42]

Patchset 1 (id:??) landed as
https://crrev.com/13a6e5b3ce19c0282b06cf15c13dc6356ea85259
Cr-Commit-Position: refs/heads/master@{#330843}