Cleanup a few loops into the new C++11 for-each style.

Source/core/frame/csp/ContentSecurityPolicy.cpp

Index: Source/core/frame/csp/ContentSecurityPolicy.cpp
diff --git a/Source/core/frame/csp/ContentSecurityPolicy.cpp b/Source/core/frame/csp/ContentSecurityPolicy.cpp
index c561c3bbe00734e23f06b58c2594f3a2d6b7f17c..76e1f8d057680d7148ff24dcc8b482225120e868 100644
--- a/Source/core/frame/csp/ContentSecurityPolicy.cpp
+++ b/Source/core/frame/csp/ContentSecurityPolicy.cpp
@@ -376,13 +376,11 @@ bool checkDigest(const String& source, uint8_t hashAlgorithmsUsed, const CSPDire
 
     StringUTF8Adaptor normalizedSource(source, StringUTF8Adaptor::Normalize, WTF::EntitiesForUnencodables);
 
-    // See comment in CSPSourceList::parseHash about why we are using this sizeof
-    // calculation instead of WTF_ARRAY_LENGTH.
-    for (size_t i = 0; i < (sizeof(kAlgorithmMap) / sizeof(kAlgorithmMap[0])); i++) {
+    for (const auto& algorithmMap : kAlgorithmMap) {
         DigestValue digest;
-        if (kAlgorithmMap[i].cspHashAlgorithm & hashAlgorithmsUsed) {
-            bool digestSuccess = computeDigest(kAlgorithmMap[i].algorithm, normalizedSource.data(), normalizedSource.length(), digest);
-            if (digestSuccess && isAllowedByAllWithHash<allowed>(policies, CSPHashValue(kAlgorithmMap[i].cspHashAlgorithm, digest)))
+        if (algorithmMap.cspHashAlgorithm & hashAlgorithmsUsed) {
+            bool digestSuccess = computeDigest(algorithmMap.algorithm, normalizedSource.data(), normalizedSource.length(), digest);
+            if (digestSuccess && isAllowedByAllWithHash<allowed>(policies, CSPHashValue(algorithmMap.cspHashAlgorithm, digest)))
                 return true;
         }
     }