Update backend plugin list in feature
Update backend plugin list in feature

Review URL: http://codereview.chromium.org/8401035

git-svn-id: 1dc80909446f7a7ee3e21dd4d1b8517df524e9ee@875 fc8a088e-31da-11de-8fef-1f5ae417a2df

VISTALL/chromedevtools,develar/chromedevtools,VISTALL/chromedevtools,VISTALL/chromedevtools,develar/chromedevtools,develar/chromedevtools,develar/chromedevtools,VISTALL/chromedevtools,VISTALL/chromedevtools