Move fling_curve_configuration.* to content/child/

BUG=338338
TBR=darin@chromium.org

Review URL: https://codereview.chromium.org/159503004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253028 0039d316-1c4b-4281-b951-d872f2087c98
Chromium plumbing for Screen Orientation API orientationchange events.

This is using RenderViewObserver::OrientationChangeEvent and dispatch
the information down to the renderer. More will come with locking
and unlocking abilities.

BUG=162827

Review URL: https://codereview.chromium.org/164913004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253029 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253029