[ServiceWorker] Introduce skipServiceWorker flag to blink::WebURLRequest and blink::ResourceRequest

public/platform/WebURLRequest.h

Index: public/platform/WebURLRequest.h
diff --git a/public/platform/WebURLRequest.h b/public/platform/WebURLRequest.h
index 13de1bb8fa50b9af770939ade0e9db0128a4333b..a140421ddec0141e3a800d64c47987aa00fac1b7 100644
--- a/public/platform/WebURLRequest.h
+++ b/public/platform/WebURLRequest.h
@@ -211,6 +211,10 @@ public:
     BLINK_PLATFORM_EXPORT bool downloadToFile() const;
     BLINK_PLATFORM_EXPORT void setDownloadToFile(bool);
 
+    // True if the request should not be handled by the ServiceWorker.
+    BLINK_PLATFORM_EXPORT bool skipServiceWorker() const;
+    BLINK_PLATFORM_EXPORT void setSkipServiceWorker(bool);
+
     // Extra data associated with the underlying resource request. Resource
     // requests can be copied. If non-null, each copy of a resource requests
     // holds a pointer to the extra data, and the extra data pointer will be