DeviceOrientation layout tests inlining

Inline the layout tests for device orientation inside the .html files,
remove the need for a separate script-tests dir for the .js files.

Also in create-event.html check for bubbles, cancelable

Review URL: https://codereview.chromium.org/285683002

git-svn-id: svn://svn.chromium.org/blink/trunk@174290 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Simplify breakpoint manager ui locations handling.

TBR=sergeyv

Review URL: https://codereview.chromium.org/294663002

git-svn-id: svn://svn.chromium.org/blink/trunk@174291 bbb929c8-8fbe-4397-9dbb-9b2b20218538