ui: Remove redundant Destroy() call when context creation fails.

GLContextEGL::Destroy() is a no-op if context_ is NULL, so we shouldn't call it when context creation fails and context_ ends up being NULL in GLContextEGL::Initialize()

BUG=

Review URL: https://codereview.chromium.org/65963002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233883 0039d316-1c4b-4281-b951-d872f2087c98
Docserver: Fixing some broken links.

NOTRY=true
BUG=316462

Review URL: https://codereview.chromium.org/65973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233884 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233883
Revert 231221 - "Remove enabled/disabled state from extension and app sync."

Some differences to account for ExtensionService's sync handling moving to ExtensionSyncService.

BUG=303311,316368
TBR=zea@chromium.org

Review URL: https://codereview.chromium.org/65983002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233885 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233885