Apply early retrun in SelectionController
Apply early retrun in SelectionController

BUG=483376
TEST=n/a; No behavior changes.
R=yosin@chromium.org

Review URL: https://codereview.chromium.org/1211903002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@197900 bbb929c8-8fbe-4397-9dbb-9b2b20218538

Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk,Pluto-tv/blink-crosswalk