Adds an IOSWebViewTypeParam() method to SearchTermsData.

Adds an IOSWebViewTypeParam() method to SearchTermsData.

This method returns the type of the iOS webview currently in use, formatted as a
cgi param suitable for appending to omnibox queries.

This CL also updates the corresponding experimental flags methods to cache the
current experiment state, since the state will soon be queried often when
constructing omnibox results.

BUG=551851
TEST=None

Review URL: https://codereview.chromium.org/1495643002

Cr-Commit-Position: refs/heads/master@{#362773}
(cherry picked from commit 4b79d938a6ee4361efd6978a123dfcf92f594a87)

Committed: https://chromium.googlesource.com/chromium/src/+/5d34f8fd767d449721b23cd9afaf74c7ae3acacc

[stuartmorgan, 2015-12-03 17:36:39]

Description was changed from

==========
Adds an IOSWebViewTypeParam() method to SearchTermsData.

This method returns the type of the iOS webview currently in use, formatted as a
cgi param suitable for appending to omnibox queries.

This CL also updates the corresponding experimental flags methods to cache the
current experiment state, since the state will soon be queried often when
constructing omnibox results.

BUG=551851
TEST=None

Review URL: https://codereview.chromium.org/1495643002

Cr-Commit-Position: refs/heads/master@{#362773}
(cherry picked from commit 4b79d938a6ee4361efd6978a123dfcf92f594a87)
==========

to

==========
Adds an IOSWebViewTypeParam() method to SearchTermsData.

This method returns the type of the iOS webview currently in use, formatted as a
cgi param suitable for appending to omnibox queries.

This CL also updates the corresponding experimental flags methods to cache the
current experiment state, since the state will soon be queried often when
constructing omnibox results.

BUG=551851
TEST=None

Review URL: https://codereview.chromium.org/1495643002

Cr-Commit-Position: refs/heads/master@{#362773}
(cherry picked from commit 4b79d938a6ee4361efd6978a123dfcf92f594a87)

Committed:
https://chromium.googlesource.com/chromium/src/+/5d34f8fd767d449721b23cd9afaf...
==========

[stuartmorgan, 2015-12-03 17:36:40]

Committed patchset #1 (id:1) manually as
5d34f8fd767d449721b23cd9afaf74c7ae3acacc.