tree 45200b3f2dad1c077d441073d3af2c0e7cec48e4
parent 7cbd477bfde02b6b1e13274382908fe5b07602e7
author mkwst@chromium.org <mkwst@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> 1357721273 +0000
committer mkwst@chromium.org <mkwst@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> 1357721273 +0000

Move iframe@seamless behind the "Experimental WebKit Features" flag.

Previously, seamless was compile-time enabled via WebKit's
ENABLE_IFRAME_SEAMLESS flag. wkrev.com/138983 added a runtime component
to enable the feature. This patch implements the Chromium side of that
change.

Until we're happy with the state of the feature, it will be hidden
behind the "Experimental WebKit Features" flag, which can be enabled
via `about:flags` for experimentation. Among other benefits, this means
that we won't forget to turn it off before each stable release rolls out
the door.

BUG=168558


Review URL: https://chromiumcodereview.appspot.com/11797004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175747 0039d316-1c4b-4281-b951-d872f2087c98