Initial WebUI extension for enhanced bookmarks

This extension will be used for an experimental prototype of enhanced
bookmark styling in Chrome behind the enable_enhanced_bookmarks build
flag. This change duplicates the existing bookmarks WebUI extension as
a basis for future changes.

BUG=299274

Review URL: https://codereview.chromium.org/24891002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226314 0039d316-1c4b-4281-b951-d872f2087c98
PNaCl documentation: Publications and presentations

Are there missing publications or presentations?

R= eliben@chromium.org, mackinlay@chromium.org, sehr@chromium.org
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3634
NOTRY=true

Review URL: https://codereview.chromium.org/25369003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226315 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226315