Fix style warning of EditorClientImpl.{cpp,h} and EditorClient.h

This patch fixes style warning in Source/core/page/EditorClient.h and Source/web/EditorClientImpl.{cpp,h} for moving code from EditorClient to other files.

BUG=n/a
TEST=n/a; no behavior changes

Review URL: https://codereview.chromium.org/72463003

git-svn-id: svn://svn.chromium.org/blink/trunk@162002 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Mark media/video-autoplay.html and media/media-load-event.html crashy

BUG=319198
R=eae
TBR=eae

Review URL: https://codereview.chromium.org/70103012

git-svn-id: svn://svn.chromium.org/blink/trunk@162003 bbb929c8-8fbe-4397-9dbb-9b2b20218538