[webcrypto] Add support for import/export of "raw" formatted EC keys.

third_party/WebKit/LayoutTests/crypto/subtle/ecdh/import-export-raw-expected.txt

Index: third_party/WebKit/LayoutTests/crypto/subtle/ecdh/import-export-raw-expected.txt
diff --git a/third_party/WebKit/LayoutTests/crypto/subtle/ecdh/import-export-raw-expected.txt b/third_party/WebKit/LayoutTests/crypto/subtle/ecdh/import-export-raw-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f5abcf0cfa9e878337daeb8c860538aa1bfa0dae
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/crypto/subtle/ecdh/import-export-raw-expected.txt
@@ -0,0 +1,27 @@
+Test importing and exporting an EC public key in raw format.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Importing raw (uncompressed) public key...
+PASS publicKey.toString() is '[object CryptoKey]'
+PASS publicKey.type is 'public'
+PASS publicKey.usages is []
+PASS publicKey.algorithm.name is 'ECDH'
+PASS publicKey.algorithm.namedCurve is 'P-256'
+Exporting to raw...
+PASS: Exported to raw should be [044ea34391aa73885454bc45df3fdcc4a70262fa4621ffe25b5790590c340a4bd9265ef2b3f9a86e2959a960d90323465d60cd4a90d314c5de3f869ad0d4bf6c10] and was
+Importing raw (compressed) public key...
+PASS publicKey.toString() is '[object CryptoKey]'
+PASS publicKey.type is 'public'
+PASS publicKey.usages is []
+PASS publicKey.algorithm.name is 'ECDH'
+PASS publicKey.algorithm.namedCurve is 'P-256'
+Exporting to raw...
+PASS: Exported to raw should be [044ea34391aa73885454bc45df3fdcc4a70262fa4621ffe25b5790590c340a4bd9265ef2b3f9a86e2959a960d90323465d60cd4a90d314c5de3f869ad0d4bf6c10] and was
+Importing invalid raw public key...
+error is: DataError: 
+PASS successfullyParsed is true
+
+TEST COMPLETE
+