Add Client Attribute to FetchEvent- Blink Side.

Source/platform/exported/WebServiceWorkerRequest.cpp

Index: Source/platform/exported/WebServiceWorkerRequest.cpp
diff --git a/Source/platform/exported/WebServiceWorkerRequest.cpp b/Source/platform/exported/WebServiceWorkerRequest.cpp
index cbf1dcef9206c32da0edee78b6b16c7999d98f67..73075ae2685ded9e180ffa834da3535e180f4dfe 100644
--- a/Source/platform/exported/WebServiceWorkerRequest.cpp
+++ b/Source/platform/exported/WebServiceWorkerRequest.cpp
@@ -32,6 +32,7 @@ public:
     WebURLRequest::RequestContext m_requestContext;
     WebURLRequest::FrameType m_frameType;
     bool m_isReload;
+    WebServiceWorkerClientInfo m_client;
 };
 
 WebServiceWorkerRequest::WebServiceWorkerRequest()
@@ -176,4 +177,14 @@ bool WebServiceWorkerRequest::isReload() const
     return m_private->m_isReload;
 }
 
+void WebServiceWorkerRequest::setClient(const WebServiceWorkerClientInfo& client)
+{
+    m_private->m_client = client;
+}
+
+WebServiceWorkerClientInfo& WebServiceWorkerRequest::client() const
+{
+    return m_private->m_client;
+}
+
 } // namespace blink