IndexedDB: Re-enable a pair of bindings tests

Apparently these were disabled back in http://wkrev.com/r140449 (~6
months ago) as a result of flakiness after http://wkrev.com/140392 and
no-one followed up. Oops.

Seem fine locally, so assuming it was something during Isolate-a-palooza
that has since been sorted out. Fingers crossed...

R=haraken@chromium.org,abarth@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19772012

git-svn-id: svn://svn.chromium.org/blink/trunk@155130 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add --disable-gpu-compositing flag to virtual software compositing tests

https://codereview.chromium.org/19267016/ changes the meaning of --enable-software-compositing to enable software compositing, but not force it, so the virtual test needs to pass the --disable-gpu-compositing flag to ensure that it's not using the GPU instead.

BUG=

Review URL: https://chromiumcodereview.appspot.com/20890002

git-svn-id: svn://svn.chromium.org/blink/trunk@155133 bbb929c8-8fbe-4397-9dbb-9b2b20218538
New positioning model: support for circle and ellipse shape-outside

Update circle and ellipse tests to work with new positioning. These
have been re-homed as W3C spec tests, and thus are imported from the
CSSWG's repository.

This is a port from WebKit http://trac.webkit.org/changeset/153337

BUG=260357

Review URL: https://chromiumcodereview.appspot.com/21104005

git-svn-id: svn://svn.chromium.org/blink/trunk@155134 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Don't extract components from invalid URLs

This CL fixes a crash where we'd get confused trying to extract a component
from an invalid URL. If the URL is invalid, the concept of a "component" is
basically meaningless, so we should just return early in lastPathComponent,
like we do for other components.

R=eseidel
BUG=254460

Review URL: https://chromiumcodereview.appspot.com/21138004

git-svn-id: svn://svn.chromium.org/blink/trunk@155135 bbb929c8-8fbe-4397-9dbb-9b2b20218538