[chromium] Export ResourceRequest's priority through WebURLRequest
https://bugs.webkit.org/show_bug.cgi?id=107985

Reviewed by Adam Barth.

Source/Platform:

* chromium/public/WebURLRequest.h:
(WebURLRequest):

Source/WebCore:

No new tests.

* platform/chromium/support/WebURLRequest.cpp:
(WebKit::WebURLRequest::priority):
(WebKit):

Source/WebKit/chromium:

* src/AssertMatchingEnums.cpp:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140906 268f45cc-cd09-0410-ab3c-d52691b4dbfc