Reverted part and setPart.

part and setPart were implemented for ::part.
Since ::part was deprecated, part and setPart should be reverted.

BUG=321953

Review URL: https://codereview.chromium.org/85093002

git-svn-id: svn://svn.chromium.org/blink/trunk@162679 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove GraphicsLayer::shouldDirectlyCompositeImage().

We have only one compositor implementation, so shouldDirectlyCompositeImage() is
not needed.

Review URL: https://codereview.chromium.org/83123004

git-svn-id: svn://svn.chromium.org/blink/trunk@162680 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[websql] remove Database::markAsDeletedAndClose and related code

It's dead code, we never call it

BUG=none
R=michaeln@chromium.org

Review URL: https://codereview.chromium.org/85443002

git-svn-id: svn://svn.chromium.org/blink/trunk@162681 bbb929c8-8fbe-4397-9dbb-9b2b20218538