Add WebSocket unittests.

Source/modules/websockets/WebSocket.h

Index: Source/modules/websockets/WebSocket.h
diff --git a/Source/modules/websockets/WebSocket.h b/Source/modules/websockets/WebSocket.h
index f48c0b52c105b1372df80e3e0d47200ecb617a9b..9b9b36727fde96d2fb3361612ba6792a6831f249 100644
--- a/Source/modules/websockets/WebSocket.h
+++ b/Source/modules/websockets/WebSocket.h
@@ -51,10 +51,10 @@ namespace WebCore {
 class Blob;
 class ExceptionState;
 
-class WebSocket FINAL : public RefCountedWillBeRefCountedGarbageCollected<WebSocket>, public ScriptWrappable, public EventTargetWithInlineData, public ActiveDOMObject, public WebSocketChannelClient {
+class WebSocket : public RefCountedWillBeRefCountedGarbageCollected<WebSocket>, public ScriptWrappable, public EventTargetWithInlineData, public ActiveDOMObject, public WebSocketChannelClient {
     DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<WebSocket>);
 public:
-    static const char* subProtocolSeperator();
+    static const char* subprotocolSeperator();
     // WebSocket instances must be used with a wrapper since this class's
     // lifetime management is designed assuming the V8 holds a ref on it while
     // hasPendingActivity() returns true.
@@ -123,7 +123,12 @@ public:
     virtual void didStartClosingHandshake() OVERRIDE;
     virtual void didClose(unsigned long unhandledBufferedAmount, ClosingHandshakeCompletionStatus, unsigned short code, const String& reason) OVERRIDE;
 
-    void trace(Visitor*);
+    virtual void trace(Visitor*);
+
+    static bool isValidSubprotocolString(const String&);
+
+protected:
+    explicit WebSocket(ExecutionContext*);
 
 private:
     // FIXME: This should inherit WebCore::EventQueue.
@@ -176,7 +181,12 @@ private:
         WebSocketSendTypeMax,
     };
 
-    explicit WebSocket(ExecutionContext*);
+    // This function is virtual for unittests.
+    // FIXME: Move WebSocketChannel::create here.
+    virtual PassRefPtrWillBeRawPtr<WebSocketChannel> createChannel(ExecutionContext* context, WebSocketChannelClient* client)
+    {
+        return WebSocketChannel::create(context, client);
+    }
 
     // Adds a console message with JSMessageSource and ErrorMessageLevel.
     void logError(const String& message);