Fetch API: Add Request#cache attribute

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

Index: third_party/WebKit/Source/modules/fetch/RequestInit.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/RequestInit.cpp b/third_party/WebKit/Source/modules/fetch/RequestInit.cpp
index d23ae70fb64ed15c1837a740825ab5d27367068a..b97291ea3d13dd0322c44f7e55539995e569d7c8 100644
--- a/third_party/WebKit/Source/modules/fetch/RequestInit.cpp
+++ b/third_party/WebKit/Source/modules/fetch/RequestInit.cpp
@@ -45,6 +45,7 @@ RequestInit::RequestInit(ExecutionContext* context,
     }
   }
   are_any_members_set |= DictionaryHelper::Get(options, "mode", mode);
+  are_any_members_set |= DictionaryHelper::Get(options, "cache", cache);

[yhirano, 2017/04/11 09:16:43]

This should be behind the flag.

[yiyix, 2017/04/11 10:00:06]

You are right, the variable |cache| will still be set in this approach. 
Done.

   are_any_members_set |= DictionaryHelper::Get(options, "redirect", redirect);
   AtomicString referrer_string;
   bool is_referrer_string_set = DictionaryHelper::GetWithUndefinedCheck(