[webcrypto] Remove support for AES 192-bit keys (1 of 2)

LayoutTests/crypto/aes-generateKey.html

Index: LayoutTests/crypto/aes-generateKey.html
diff --git a/LayoutTests/crypto/aes-generateKey.html b/LayoutTests/crypto/aes-generateKey.html
index af1c9484b51475a4781526bc3f013b78c408388d..4d6fc22189ed40ce9ad2348716c03de0982035db 100644
--- a/LayoutTests/crypto/aes-generateKey.html
+++ b/LayoutTests/crypto/aes-generateKey.html
@@ -13,7 +13,7 @@ description("Tests generating AES keys");
 
 jsTestIsAsync = true;
 
-// Tests the 48 permutations of keys generated by:
+// Tests the 32 permutations of keys generated by:
 //   kPossibleAlgorithms x kPossibleExtractable x kPossibleKeyUsages x kPossibleKeyLengths
 //
 // For practical reasons these tests are not exhaustive.
@@ -21,7 +21,7 @@ jsTestIsAsync = true;
 var kPossibleAlgorithms = ['AES-CBC', 'AES-GCM'];
 var kPossibleExtractable = [true, false];
 var kPossibleKeyUsages = [[], ['encrypt'], ['decrypt', 'wrapKey'], ['encrypt', 'wrapKey', 'unwrapKey']];
-var kPossibleKeyLengths = [128, 192, 256];
+var kPossibleKeyLengths = [128, 256];
 
 // Set of all key data generated so far.
 var allKeyDataGenerated = {};