Remove stale test expectations for tests under fast/dom/shadow/.

According to the flakiness dashboard, these tests are passing consistently:
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20Blink&tests=fast%2Fdom%2Fshadow%2Finsertion-point-resetStyleInheritance-with-pseudo-element-crash.html%2Cfast%2Fdom%2Fshadow%2Ftransition-on-shadow-host-with-distributed-node.html

BUG=249706,243303
R=morrita@chromium.org

Review URL: https://chromiumcodereview.appspot.com/18344012

git-svn-id: svn://svn.chromium.org/blink/trunk@153604 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Rename LayoutTests/platform/chromium-android to LayoutTests/platform/android

BUG=231188
R=ojan@chromium.org

Review URL: https://codereview.chromium.org/18730002

git-svn-id: svn://svn.chromium.org/blink/trunk@153605 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Refactor TRACE_EVENT macros and make them consistent to Chromium side macros

We refactored TRACE_EVENT macros in the Chromium side.
(See https://codereview.chromium.org/18587004/.)

This CL makes the same change to the WebKit side macros to make them
consistent. I confirmed that this change doesn't increase the number
of CPU instructions in each TRACE_EVENT macros.

BUG=241743
R=abarth,adamk

Review URL: https://chromiumcodereview.appspot.com/18419005

git-svn-id: svn://svn.chromium.org/blink/trunk@153606 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Reland "Add support for border-image-repeat: round, which adjusts the border".

This is not the cause of the failure: linux_rel trybot passes on this change.

Original change was http://crrev.com/18055013 (r153517); revert was http://crrev.com/18651005/ (r153525).

TBR=crogers@google.com,schenney@chromium.org
BUG=169254

Review URL: https://chromiumcodereview.appspot.com/18341015

git-svn-id: svn://svn.chromium.org/blink/trunk@153607 bbb929c8-8fbe-4397-9dbb-9b2b20218538