Change a bool type to an enum type in constructor argument of SpaceSplitString.

Source/core/dom/SandboxFlags.cpp

Index: Source/core/dom/SandboxFlags.cpp
diff --git a/Source/core/dom/SandboxFlags.cpp b/Source/core/dom/SandboxFlags.cpp
index bdc39d347c158f74b08d0b3205191dbd9b0b792e..4df79990cba5112f93c3e5f9fd8fc20a19f26501 100644
--- a/Source/core/dom/SandboxFlags.cpp
+++ b/Source/core/dom/SandboxFlags.cpp
@@ -34,8 +34,7 @@ namespace blink {
 
 SandboxFlags parseSandboxPolicy(const String& policy, String& invalidTokensErrorMessage)
 {
-    const bool shouldFoldCase = false;
-    SpaceSplitString policyTokens(AtomicString(policy), shouldFoldCase);
+    SpaceSplitString policyTokens(AtomicString(policy), SpaceSplitString::ShouldNotFoldCase);
     return parseSandboxPolicy(policyTokens, invalidTokensErrorMessage);
 }