Support DataSaver for SharedWorker

third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp

Index: third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
diff --git a/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp b/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
index d4830069f643e0b183069986e0f4e13af1dbf27d..488f58234a0655c6b6eb1acb0ba07eb98f14e468 100644
--- a/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
+++ b/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
@@ -17,6 +17,7 @@
 #include "public/platform/WebThread.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/platform/WebWorkerFetchContext.h"
+#include "public/web/WebDataSaverFlag.h"
 
 namespace blink {
 
@@ -181,7 +182,7 @@ void WorkerFetchContext::AddAdditionalRequestHeaders(ResourceRequest& request,
   if (!request.Url().IsEmpty() && !request.Url().ProtocolIsInHTTPFamily())
     return;
 
-  if (web_context_->IsDataSaverEnabled())
+  if (web_context_->DataSaverFlag() == WebDataSaverFlag::kEnabled)
     request.SetHTTPHeaderField("Save-Data", "on");
 }