Matching for import/export/part directives.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//750083002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41915 260f80e4-7a28-3924-810f-c04153c831b5
Fixed pointerlock* getters

Fixed onPointerLockChange, onPointerLockError and pointerLockElement not exposed after webkit prefix wa removed.

Review=vsm@google.com
BUG=21376
R=vsm@google.com

Review URL: https://codereview.chromium.org//750093002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41916 260f80e4-7a28-3924-810f-c04153c831b5
Clean up hints.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//750103002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41917 260f80e4-7a28-3924-810f-c04153c831b5
- Remove unimplemented function from header.

Review URL: https://codereview.chromium.org//748843003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41918 260f80e4-7a28-3924-810f-c04153c831b5