[webcrypto] Implement PBKDF2 (blink-side)

LayoutTests/crypto/subtle/pbkdf2-deriveKey-failures-expected.txt

Index: LayoutTests/crypto/subtle/pbkdf2-deriveKey-failures-expected.txt
diff --git a/LayoutTests/crypto/subtle/pbkdf2-deriveKey-failures-expected.txt b/LayoutTests/crypto/subtle/pbkdf2-deriveKey-failures-expected.txt
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+Tests deriveKey() with various bad parameters for PBKDF2
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Importing the password...
+
+Deriving an AES key with no length...
+error is: TypeError: AesDerivedKeyParams: length: Missing required property
+
+Deriving an AES key with bad length...
+error is: OperationError: AES key length must be 128 or 256 bits
+
+Deriving an AES key with unsupported length...
+error is: OperationError: 192-bit AES keys are not supported
+
+Deriving an AES-CBC key with unsupported usage (sign)...
+error is: SyntaxError: Cannot create a key using the specified key usages.
+
+Deriving a zero-length HMAC key...
+error is: TypeError: HMAC key length must not be zero
+
+Deriving an ECDH key...
+error is: NotSupportedError: ECDH: Unsupported operation: get key length
+
+Deriving an RSA-OAEP key...
+error is: NotSupportedError: RSA-OAEP: Unsupported operation: get key length
+
+PASS successfullyParsed is true
+
+TEST COMPLETE
+