maximumAge and timeout should be used after initialization.

Local variables(maximumAge and timeout) in PositionOptions constructor
could be used without initializing, if "options.get()" returns false.

BUG=390314

Review URL: https://codereview.chromium.org/382443002

git-svn-id: svn://svn.chromium.org/blink/trunk@177789 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove some stale lines from TestExpectations.

Linux Aura is long-shipped and the bug is marked fixed.

BUG=318980
TBR=dpranke@chromium.org

Review URL: https://codereview.chromium.org/376263003

git-svn-id: svn://svn.chromium.org/blink/trunk@177790 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Rerebaseline http/tests/misc/object-embedding-svg-delayed-size-negotiation-2.htm

This was rebaselined in http://src.chromium.org/viewvc/blink?revision=177757&view=revision,
but the XP result was wrong because the test flaky timed out that run.

BUG=392626
TBR=eae@chromium.org

Remove some stale lines from TestExpectations.

Linux Aura is long-shipped and the bug is marked fixed.

BUG=318980

Review URL: https://codereview.chromium.org/381543003

git-svn-id: svn://svn.chromium.org/blink/trunk@177791 bbb929c8-8fbe-4397-9dbb-9b2b20218538
virtual/threaded/animations/play-state-initially-paused.html is failing.

BUG=392706
TBR=eae@chromium.org

Review URL: https://codereview.chromium.org/381583006

git-svn-id: svn://svn.chromium.org/blink/trunk@177792 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[ServiceWorker] Make Response class better conformance with the spec.

In current implementation Response class only supports status, statusText, and headers attributes.
This change introduce type, url attributes and change the class of headers attribute from HeaderMap to Headers and make all attributes readonly.
And also this change implements the logic which is defined in the spec.

http://fetch.spec.whatwg.org/#response-class 
http://fetch.spec.whatwg.org/#response


This cl depends on http://crrev.com/329853012 and http://crrev.com/370733002

BUG=373120

Review URL: https://codereview.chromium.org/373613004

git-svn-id: svn://svn.chromium.org/blink/trunk@177793 bbb929c8-8fbe-4397-9dbb-9b2b20218538