[sql] Stop building fts2.

[sql] Stop building fts2.

Long ago, Chromium used fts2 for history full-text search.  It was
later replaced by fts3, and even later that feature was deleted
entirely.  fts2 is no longer used in the browser at all, so stop
compiling it.

Since SQLite is used by WebSQL, in theory this could affect web
authors, but WebSQL uses an authorizer to allow only specific virtual
table types.  fts2 is not one of those types, I have verified manually
that fts2 tables cannot be created using WebSQL.

BUG=455817
Committed: https://crrev.com/37437cbb433dc0c96691ef7f19880533375703f6
Cr-Commit-Position: refs/heads/master@{#320135}

[Scott Hess - ex-Googler, 2015-03-11 00:04:14]

shess@chromium.org changed reviewers:
+ michaeln@chromium.org

[Scott Hess - ex-Googler, 2015-03-11 00:04:14]

I think this SQLite thing is going to stick, so might as well land this.

[michaeln, 2015-03-11 19:10:20]

lgtm!!

[Scott Hess - ex-Googler, 2015-03-11 19:15:50]

The CQ bit was checked by shess@chromium.org

[commit-bot: I haz the power, 2015-03-11 19:38:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/999573003/1

[commit-bot: I haz the power, 2015-03-11 20:06:43]

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

[commit-bot: I haz the power, 2015-03-11 20:06:45]

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...)

[Scott Hess - ex-Googler, 2015-03-11 20:10:21]

shess@chromium.org changed reviewers:
+ scottmg@chromium.org

[Scott Hess - ex-Googler, 2015-03-11 20:10:21]

Err, shoulda seen that coming.

[scottmg, 2015-03-11 20:13:54]

Delete-ings always lgtm.

[scottmg, 2015-03-11 20:14:23]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2015-03-11 20:15:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/999573003/1

[commit-bot: I haz the power, 2015-03-11 20:24:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-11 20:26:08]

Patchset 1 (id:??) landed as
https://crrev.com/37437cbb433dc0c96691ef7f19880533375703f6
Cr-Commit-Position: refs/heads/master@{#320135}