Make WebServiceWorkerResponse support ResponseType

public/platform/WebServiceWorkerResponse.h

Index: public/platform/WebServiceWorkerResponse.h
diff --git a/public/platform/WebServiceWorkerResponse.h b/public/platform/WebServiceWorkerResponse.h
index e119abfcf4d7fe27eb3cd51e2997984f72ac1e72..65ab5a1a1e83fde6561783590ed627a64929eaac 100644
--- a/public/platform/WebServiceWorkerResponse.h
+++ b/public/platform/WebServiceWorkerResponse.h
@@ -29,6 +29,14 @@ class WebServiceWorkerResponsePrivate;
 // and fetch() API to also use it.
 class BLINK_PLATFORM_EXPORT WebServiceWorkerResponse {
 public:
+    enum ResponseType {
+        BasicType,
+        CORSType,
+        DefaultType,
+        ErrorType,
+        OpaqueType,
+        ResponseTypeLast = OpaqueType
+    };

[jsbell, 2014/09/30 22:14:44]

Blank line after this?

[jkarlin, 2014/10/01 00:11:00]

Done.

     ~WebServiceWorkerResponse() { reset(); }
     WebServiceWorkerResponse();
     WebServiceWorkerResponse(const WebServiceWorkerResponse& other) { assign(other); }
@@ -50,6 +58,9 @@ public:
     void setStatusText(const WebString&);
     WebString statusText() const;
 
+    void setResponseType(ResponseType);
+    ResponseType responseType() const;
+
     void setHeader(const WebString& key, const WebString& value);
 
     // If the key already exists, appends the value to the same key (comma