WTF: Support enums in DefaultHash and HashTraits by casting to integral types.

third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp

Index: third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp
diff --git a/third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp b/third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp
index 5fc77fc2607aec95e1f3626145ca1ebe889e8bd9..07f9bb0bb1c2346f5f16c958293d3c122ddea5cf 100644
--- a/third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp
+++ b/third_party/WebKit/Source/platform/weborigin/SchemeRegistry.cpp
@@ -351,9 +351,12 @@ bool SchemeRegistry::schemeShouldBypassContentSecurityPolicy(
 
   // get() returns 0 (PolicyAreaNone) if there is no entry in the map.
   // Thus by default, schemes do not bypass CSP.
-  return (getURLSchemesRegistry().contentSecurityPolicyBypassingSchemes.get(
-              scheme) &
-          policyAreas) == policyAreas;
+  const auto& schemes =
+      getURLSchemesRegistry().contentSecurityPolicyBypassingSchemes;
+  auto it = schemes.find(scheme);
+  PolicyAreas allowedPolicyAreas =
+      (it == schemes.end() ? PolicyAreaNone : it->value);
+  return !(policyAreas & ~allowedPolicyAreas);
 }
 
 void SchemeRegistry::registerURLSchemeBypassingSecureContextCheck(