Reland of Set the request mode and the credentials mode of FetchEvent in the service worker correct…

third_party/WebKit/Source/platform/network/ResourceRequest.cpp

Index: third_party/WebKit/Source/platform/network/ResourceRequest.cpp
diff --git a/third_party/WebKit/Source/platform/network/ResourceRequest.cpp b/third_party/WebKit/Source/platform/network/ResourceRequest.cpp
index 045c964981ffa2d5eb36072e3fc2296183b65a27..23a3ba072ff37d6b99b7a5a44f871cef7eef87ae 100644
--- a/third_party/WebKit/Source/platform/network/ResourceRequest.cpp
+++ b/third_party/WebKit/Source/platform/network/ResourceRequest.cpp
@@ -453,10 +453,7 @@ void ResourceRequest::initialize(const KURL& url)
     m_requestContext = WebURLRequest::RequestContextUnspecified;
     m_frameType = WebURLRequest::FrameTypeNone;
     m_fetchRequestMode = WebURLRequest::FetchRequestModeNoCORS;
-    // Contrary to the Fetch spec, we default to same-origin mode here, and deal
-    // with CORS modes in updateRequestForAccessControl if we're called in a
-    // context which requires it.
-    m_fetchCredentialsMode = WebURLRequest::FetchCredentialsModeSameOrigin;
+    m_fetchCredentialsMode = WebURLRequest::FetchCredentialsModeInclude;
     m_fetchRedirectMode = WebURLRequest::FetchRedirectModeFollow;
     m_referrerPolicy = ReferrerPolicyDefault;
     m_loFiState = WebURLRequest::LoFiUnspecified;