https://bugs.webkit.org/show_bug.cgi?id=65367

Reviewed by Kent Tamura.

To implement multiple subprotocols support (bug 65247), WebSocket::connect() will need to validate
the value of subprotocols after constructing WebSocketChannel, because the result depends on which
WebSocket protocol is used, which is obtained from WebSocketChannel::useHixie76Protocol(). This
means the subprotocol value will not be available at the time of WebSocketChannel construction.

This change moves URL and subprotocol arguments in WebSocketChannel constructor to
WebSocketChannel::connect(), which allows WebSocket::connect() function to check the subprotocol
value before the actual connection is established.

Relocating URL argument is technically not necessary, but seemed legitimate in terms of functional
correspondence between WebSocket and WebSocketChannel (constructor versus connect()).

No change in behavior, thus no new tests.

* websockets/ThreadableWebSocketChannel.cpp:
Remove "url" and "protocol" arguments from constructor and add them in connect().
(WebCore::ThreadableWebSocketChannel::create):
* websockets/ThreadableWebSocketChannel.h:
* websockets/WebSocket.cpp:
(WebCore::WebSocket::connect):
* websockets/WebSocketChannel.cpp: Same as ThreadableWebSocketChannel.
(WebCore::WebSocketChannel::WebSocketChannel):
(WebCore::WebSocketChannel::connect):
InspectorInstrumentation::didCreateWebSocket() call was moved to connect() because it needs URL.
This does not change behavior, because connect() is guaranteed to be called immediately after
WebSocketChannel is constructed.
* websockets/WebSocketChannel.h:
(WebCore::WebSocketChannel::create):
* websockets/WorkerThreadableWebSocketChannel.cpp: Same as ThreadableWebSocketChannel.
(WebCore::WorkerThreadableWebSocketChannel::WorkerThreadableWebSocketChannel):
(WebCore::WorkerThreadableWebSocketChannel::connect):
(WebCore::WorkerThreadableWebSocketChannel::Peer::Peer):
(WebCore::WorkerThreadableWebSocketChannel::Peer::connect):
(WebCore::WorkerThreadableWebSocketChannel::Bridge::mainThreadCreateWebSocketChannel):
(WebCore::WorkerThreadableWebSocketChannel::Bridge::Bridge):
(WebCore::WorkerThreadableWebSocketChannel::mainThreadConnect):
(WebCore::WorkerThreadableWebSocketChannel::Bridge::connect):
* websockets/WorkerThreadableWebSocketChannel.h:
(WebCore::WorkerThreadableWebSocketChannel::create):
(WebCore::WorkerThreadableWebSocketChannel::Peer::create):
(WebCore::WorkerThreadableWebSocketChannel::Bridge::create):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@92116 268f45cc-cd09-0410-ab3c-d52691b4dbfc