Class/struct layout optimization for blink Resource related classes

third_party/WebKit/Source/platform/loader/fetch/IntegrityMetadata.h

 // Copyright 2015 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.
 
 #ifndef IntegrityMetadata_h
 #define IntegrityMetadata_h
 
 #include "platform/Crypto.h"
 #include "platform/PlatformExport.h"
 #include "platform/wtf/HashSet.h"
@@ skipping 22 matching lines @@
   IntegrityMetadataPair ToPair() const;
 
   static bool SetsEqual(const IntegrityMetadataSet& set1,
                         const IntegrityMetadataSet& set2);
 
  private:
   WTF::String digest_;
   HashAlgorithm algorithm_;
 };
 
-enum class ResourceIntegrityDisposition { kNotChecked = 0, kFailed, kPassed };
+enum class ResourceIntegrityDisposition : uint8_t {
+  kNotChecked = 0,
+  kFailed,
+  kPassed
+};
 
 }  // namespace blink
 
 #endif