Revert of Cache SubResourceIntegrity checks at Resource (patchset #2 id:20001 of https://codereview…

third_party/WebKit/Source/core/fetch/Resource.cpp

Index: third_party/WebKit/Source/core/fetch/Resource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/Resource.cpp b/third_party/WebKit/Source/core/fetch/Resource.cpp
index d0de8259a3b53162531e2bb2d529296f5f0cf925..a51befa492dba9b7ec60015dfbb1337314de5664 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.cpp
+++ b/third_party/WebKit/Source/core/fetch/Resource.cpp
@@ -27,8 +27,6 @@
 #include "core/fetch/CachedMetadata.h"
 #include "core/fetch/CrossOriginAccessControl.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
-#include "core/fetch/FetchRequest.h"
-#include "core/fetch/IntegrityMetadata.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceClient.h"
 #include "core/fetch/ResourceClientWalker.h"
@@ -315,7 +313,6 @@ Resource::Resource(const ResourceRequest& request,
       m_linkPreload(false),
       m_isRevalidating(false),
       m_isAlive(false),
-      m_integrityDisposition(ResourceIntegrityDisposition::NotChecked),
       m_isAddRemoveClientProhibited(false),
       m_options(options),
       m_responseTimestamp(currentTime()),
@@ -452,22 +449,6 @@ bool Resource::isEligibleForIntegrityCheck(
          passesAccessControlCheck(securityOrigin, ignoredErrorDescription);
 }
 
-void Resource::setIntegrityDisposition(
-    ResourceIntegrityDisposition disposition) {
-  DCHECK_NE(disposition, ResourceIntegrityDisposition::NotChecked);
-  DCHECK(m_type == Resource::Script);
-  m_integrityDisposition = disposition;
-}
-
-bool Resource::mustRefetchDueToIntegrityMetadata(
-    const FetchRequest& request) const {
-  if (request.integrityMetadata().isEmpty())
-    return false;
-
-  return !IntegrityMetadata::setsEqual(m_integrityMetadata,
-                                       request.integrityMetadata());
-}
-
 static double currentAge(const ResourceResponse& response,
                          double responseTimestamp) {
   // RFC2616 13.2.3