WebCrypto: Add framework for AlgorithmIdentifier normalization.

LayoutTests/crypto/normalize-algorithm-expected.txt

Index: LayoutTests/crypto/normalize-algorithm-expected.txt
diff --git a/LayoutTests/crypto/normalize-algorithm-expected.txt b/LayoutTests/crypto/normalize-algorithm-expected.txt
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+++ b/LayoutTests/crypto/normalize-algorithm-expected.txt
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+Tests algorithm normalization.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS algorithm.name is 'SHA-1'
+PASS algorithm.name is 'SHA-256'
+PASS normalizeDigest({}) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({name: null}) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({name: -1}) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({name: ''}) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({name: 'nosuchalgorithm'}) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({name: '\u0189'}) threw exception SyntaxError: An invalid or illegal string was specified..
+PASS normalizeDigest(null) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest(0) threw exception TypeError: Not an object..
+PASS normalizeDigest(undefined) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest('') threw exception TypeError: Not an object..
+PASS algorithm.noSuchParam is undefined.
+PASS algorithm.name is 'AES-CBC'
+PASS algorithm.iv.length is 16
+PASS algorithm.iv[3] is 3
+PASS algorithm.iv[3] is 3
+PASS normalizeEncrypt(rawAlgorithm) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS algorithm.name is 'SHA-384'
+PASS algorithm.name is 'SHA-384'
+PASS algorithm.name is 'AES-CBC'
+PASS algorithm.iv.length is 16
+PASS algorithm.iv[1] is 1
+PASS algorithm.name is 'AES-CBC'
+PASS algorithm.iv.length is 16
+PASS algorithm.iv[1] is 1
+PASS normalizeEncrypt({ name: 'SHA-1' }) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS normalizeDigest({ name: 'AES-CBC', iv: originalIv }) threw exception NotSupportedError: The implementation did not support the requested type of object or operation..
+PASS successfullyParsed is true
+
+TEST COMPLETE
+