Add WebSerializedOrigin to represent a serialized Web Origin.

public/platform/WebSocketHandle.h

Index: public/platform/WebSocketHandle.h
diff --git a/public/platform/WebSocketHandle.h b/public/platform/WebSocketHandle.h
index f721891ace4ee332b73afa21484e67a2e28aba0b..4eed84647ea0afabfe1fbe87b2afcfc05e4ac185 100644
--- a/public/platform/WebSocketHandle.h
+++ b/public/platform/WebSocketHandle.h
@@ -31,8 +31,9 @@
 #ifndef WebSocketHandle_h
 #define WebSocketHandle_h
 
-#include "WebCommon.h"
-#include "WebVector.h"
+#include "public/platform/WebCommon.h"
+#include "public/platform/WebSerializedOrigin.h"
+#include "public/platform/WebVector.h"
 
 namespace blink {
 
@@ -58,7 +59,16 @@ public:
 
     virtual ~WebSocketHandle() { }
 
-    virtual void connect(const WebURL& /* url */, const WebVector<WebString>& protocols, const WebString& origin, WebSocketHandleClient*) = 0;
+    virtual void connect(const WebURL& url, const WebVector<WebString>& protocols, const WebString& origin, WebSocketHandleClient* client)
+    {
+        // This method is not pure-virtual to avoid a compile error during
+        // the transition from connect(..., WebString, ...) to
+        // connect(..., WebSerializedOrigin, ...).
+    }
+    virtual void connect(const WebURL& url, const WebVector<WebString>& protocols, const WebSerializedOrigin& origin, WebSocketHandleClient* client)
+    {
+        this->connect(url, protocols, origin.string(), client);
+    }
     virtual void send(bool fin, MessageType, const char* data, size_t /* size */) = 0;
     virtual void flowControl(int64_t quota) = 0;
     virtual void close(unsigned short code, const WebString& reason) = 0;