Gardening: some TestExpectations updates

Several of these are related to the apache switch on Win (crbug.com/30536).

BUG=30536,278497,394206,394208,394210
TBR=dpranke

Review URL: https://codereview.chromium.org/395063002

git-svn-id: svn://svn.chromium.org/blink/trunk@178240 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Use NavigatorContentUtils guard for unregisterProtocolHandler()

As unregisterProtocolHandler() is shipped, it would be good to use NavigatorContentUtils REF for it.

BUG=392016

Review URL: https://codereview.chromium.org/394463004

git-svn-id: svn://svn.chromium.org/blink/trunk@178241 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix build after WebCore namespace rename

This CL fixes some build breaks from the future world in which the WebCore
namespace has been renamed to blink.

R=esprehn@chromium.org

Review URL: https://codereview.chromium.org/396873002

git-svn-id: svn://svn.chromium.org/blink/trunk@178242 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Don't run sheriff-o-matic unittests until polymer-ready.

Polymer isn't ready to do anything until this event fires,
which is not necessarily after the window's load event.

NOTRY=true

Review URL: https://codereview.chromium.org/396783007

git-svn-id: svn://svn.chromium.org/blink/trunk@178243 bbb929c8-8fbe-4397-9dbb-9b2b20218538