[webcrypto] Remove support for SHA-224 (CL 2 or 3).

content/test/data/webcrypto/digest.json

Index: content/test/data/webcrypto/digest.json
diff --git a/content/test/data/webcrypto/digest.json b/content/test/data/webcrypto/digest.json
index 419513011a36e194038f39814a833fc01c034205..354c9e05b6994196c5ce105785ef7c7f1406d802 100644
--- a/content/test/data/webcrypto/digest.json
+++ b/content/test/data/webcrypto/digest.json
@@ -3,16 +3,12 @@
 // TODO(bryaneyler): Eventually, all these sample test sets should be replaced
 // with the sets here: http://csrc.nist.gov/groups/STM/cavp/index.html#03
 //
-// Results were generated using the command sha{1,224,256,384,512}sum.
+// Results were generated using the command sha{1,256,384,512}sum.
 [
   { "algorithm": "sha-1",
     "input": "",
     "output": "da39a3ee5e6b4b0d3255bfef95601890afd80709"
   },
-  { "algorithm": "sha-224",
-    "input": "",
-    "output": "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f"
-  },
   { "algorithm": "sha-256",
     "input": "",
     "output": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
@@ -29,10 +25,6 @@
     "input": "00",
     "output": "5ba93c9db0cff93f52b521d7420e43f6eda2784f"
   },
-  { "algorithm": "sha-224",
-    "input": "00",
-    "output": "fff9292b4201617bdc4d3053fce02734166a683d7d858a7f5f59b073"
-  },
   { "algorithm": "sha-256",
     "input": "00",
     "output": "6e340b9cffb37a989ca544e6bb780a2c78901d3fb33738768511a30617afa01d"
@@ -49,10 +41,6 @@
     "input": "000102030405",
     "output": "868460d98d09d8bbb93d7b6cdd15cc7fbec676b9"
   },
-  { "algorithm": "sha-224",
-    "input": "000102030405",
-    "output": "7d92e7f1cad1818ed1d13ab41f04ebabfe1fef6bb4cbeebac34c29bc"
-  },
   { "algorithm": "sha-256",
     "input": "000102030405",
     "output": "17e88db187afd62c16e5debf3e6527cd006bc012bc90b51a810cd80c2d511f43"