Fetch API: Add Request#cache attribute

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/fetch/RequestInit.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
 #include "bindings/core/v8/V8Binding.h"
@@ skipping 27 matching lines @@
     if (DictionaryHelper::Get(options, "headers", headers_vector,
                               exception_state)) {
       headers = Headers::Create(headers_vector, exception_state);
       are_any_members_set = true;
     } else {
       are_any_members_set |=
           DictionaryHelper::Get(options, "headers", headers_dictionary);
     }
   }
   are_any_members_set |= DictionaryHelper::Get(options, "mode", mode);
+  if (RuntimeEnabledFeatures::fetchRequestCacheEnabled())
+    are_any_members_set |= DictionaryHelper::Get(options, "cache", cache);
+
   are_any_members_set |= DictionaryHelper::Get(options, "redirect", redirect);
   AtomicString referrer_string;
   bool is_referrer_string_set = DictionaryHelper::GetWithUndefinedCheck(
       options, "referrer", referrer_string);
   are_any_members_set |= is_referrer_string_set;
   are_any_members_set |= DictionaryHelper::Get(options, "integrity", integrity);
   AtomicString referrer_policy_string;
   bool is_referrer_policy_set =
       DictionaryHelper::Get(options, "referrerPolicy", referrer_policy_string);
   are_any_members_set |= is_referrer_policy_set;
@@ skipping 93 matching lines @@
         AtomicString("application/x-www-form-urlencoded;charset=UTF-8");
     body = new FormDataBytesConsumer(context, form_data.Release());
   } else if (v8_body->IsString()) {
     content_type = "text/plain;charset=UTF-8";
     body = new FormDataBytesConsumer(
         ToUSVString(isolate, v8_body, exception_state));
   }
 }
 
 }  // namespace blink