Fetch API: Add Request#cache attribute

third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp

Index: third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp b/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
index c68db514724979bdd205eb0619b324d412240abd..74f5b2ea38c1991385e177f12a6ab9d3edf746ad 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
@@ -43,6 +43,7 @@ FetchRequestData* FetchRequestData::Create(
                static_cast<ReferrerPolicy>(web_request.GetReferrerPolicy())));
   request->SetMode(web_request.Mode());
   request->SetCredentials(web_request.CredentialsMode());
+  request->cache_ = web_request.RequestCache();
   request->SetRedirect(web_request.RedirectMode());
   request->SetMIMEType(request->header_list_->ExtractMIMEType());
   return request;
@@ -60,6 +61,7 @@ FetchRequestData* FetchRequestData::CloneExceptBody() {
   request->referrer_ = referrer_;
   request->mode_ = mode_;
   request->credentials_ = credentials_;
+  request->cache_ = cache_;
   request->redirect_ = redirect_;
   request->response_tainting_ = response_tainting_;
   request->mime_type_ = mime_type_;
@@ -101,6 +103,7 @@ FetchRequestData::FetchRequestData()
       referrer_(Referrer(ClientReferrerString(), kReferrerPolicyDefault)),
       mode_(WebURLRequest::kFetchRequestModeNoCORS),
       credentials_(WebURLRequest::kFetchCredentialsModeOmit),
+      cache_(WebURLRequest::kFetchRequestCacheDefault),
       redirect_(WebURLRequest::kFetchRedirectModeFollow),
       response_tainting_(kBasicTainting) {}