Rename URL::copy() to URL::isolatedCopy() to match String.

Rename URL::copy() to URL::isolatedCopy() to match String.
https://bugs.webkit.org/show_bug.cgi?id=144684

Patch by Sungmann Cho <sungmann.cho@navercorp.com> on 2015-05-06
Reviewed by Darin Adler.

No new tests, no behavior change.

* Modules/websockets/WebSocketHandshake.cpp:
(WebCore::WebSocketHandshake::setURL):
(WebCore::WebSocketHandshake::httpURLForAuthenticationAndCookies):
* fileapi/ThreadableBlobRegistry.cpp:
(WebCore::BlobRegistryContext::BlobRegistryContext):
* html/parser/HTMLPreloadScanner.cpp:
(WebCore::TokenPreloadScanner::updatePredictedBaseURL):
* html/parser/HTMLResourcePreloader.h:
(WebCore::PreloadRequest::PreloadRequest):
* html/parser/XSSAuditor.cpp:
(WebCore::XSSAuditor::init):
* platform/CrossThreadCopier.cpp:
(WebCore::URL>::copy):
* platform/URL.cpp:
(WebCore::URL::isolatedCopy):
(WebCore::URL::copy): Deleted.
* platform/URL.h:
(WebCore::URLCapture::URLCapture):
* platform/network/BlobPart.h:
(WebCore::BlobPart::detachFromCurrentThread):
* platform/network/ResourceRequestBase.cpp:
(WebCore::ResourceRequestBase::copyData):
* platform/network/ResourceResponseBase.cpp:
(WebCore::ResourceResponseBase::copyData):
* workers/WorkerThread.cpp:
(WebCore::WorkerThreadStartupData::WorkerThreadStartupData):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@183901 268f45cc-cd09-0410-ab3c-d52691b4dbfc