Remove DNS probe field trials and command line switch.
Probing is enabled by default now, and is no longer an
experimental feature.

Also updates DNS probe browser tests to use the preference
rather than forcing probes to be enabled, and add a couple
tests where probes and/or the Link Doctor are disabled.

BUG=319374

Review URL: https://codereview.chromium.org/68213026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236643 0039d316-1c4b-4281-b951-d872f2087c98
[NaCl SDK] Turn off parallel GYP when building nacl_sdk.

This will make it easier to drover a change to the 1700 branch, instead of
having to branch native_client to get the real fix (r12324).

BUG=319564
R=sbc@chromium.org

Review URL: https://codereview.chromium.org/62523005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236644 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236643
Fixed webview_plugin placeholders not rendering.

The plugin placeholder was loading into a WebView, which had viewport
enabled so the placeholder was loading the page at the 980px layout width.
For some reason this caused it not to render at all. Setting the plugin WebView
to use the FixedLayoutSize pegged to the WebView size fixes the problem.

BUG=320621

Review URL: https://codereview.chromium.org/81373002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236645 0039d316-1c4b-4281-b951-d872f2087c98
Docserver: Pull the intro parsing logic into a separate DocumentParser class,
add tests, and fix a couple of files which this finds bugs with.

BUG=320339
R=yoz@chromium.org

Review URL: https://codereview.chromium.org/77133004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236646 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236646