[WK2] Rename WebURLResponse to API::URLResponse

[WK2] Rename WebURLResponse to API::URLResponse
https://bugs.webkit.org/show_bug.cgi?id=125910

Reviewed by Andreas Kling.

* Shared/API/c/WKSharedAPICast.h:
(WebKit::toAPI):
* Shared/API/c/WKURLResponse.cpp:
(WKURLResponseGetTypeID):
* Shared/API/c/mac/WKURLResponseNS.mm:
(WKURLResponseCreateWithNSURLResponse):
* Shared/APIURLRequest.cpp:
* Shared/APIURLResponse.cpp: Copied from Source/WebKit2/Shared/WebURLResponse.cpp.
(API::URLResponse::URLResponse):
(API::URLResponse::encode):
(API::URLResponse::decode):
* Shared/APIURLResponse.h: Copied from Source/WebKit2/Shared/WebURLResponse.h.
(API::URLResponse::create):
* Shared/UserMessageCoders.h:
(WebKit::UserMessageEncoder::baseEncode):
(WebKit::UserMessageDecoder::baseDecode):
* Shared/WebURLResponse.cpp: Removed.
* Shared/WebURLResponse.h: Removed.
* UIProcess/WebDownloadClient.cpp:
(WebKit::WebDownloadClient::didReceiveResponse):
* UIProcess/WebPolicyClient.cpp:
(WebKit::WebPolicyClient::decidePolicyForResponse):
* WebKit2.xcodeproj/project.pbxproj:
* WebProcess/InjectedBundle/InjectedBundlePagePolicyClient.cpp:
(WebKit::InjectedBundlePagePolicyClient::decidePolicyForResponse):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@160853 268f45cc-cd09-0410-ab3c-d52691b4dbfc