[webcrypto] Don't fail JWK import if key_ops contains an unrecognized value.

content/child/webcrypto/webcrypto_util.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/webcrypto/webcrypto_util.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "content/child/webcrypto/status.h"
@@ skipping 85 matching lines @@
 Status GetWebCryptoUsagesFromJwkKeyOps(
     const base::ListValue* jwk_key_ops_value,
     blink::WebCryptoKeyUsageMask* usage_mask) {
   *usage_mask = 0;
   for (size_t i = 0; i < jwk_key_ops_value->GetSize(); ++i) {
     std::string key_op;
     if (!jwk_key_ops_value->GetString(i, &key_op)) {
       return Status::ErrorJwkPropertyWrongType(
           base::StringPrintf("key_ops[%d]", static_cast<int>(i)), "string");
     }
-    if (!JwkKeyOpToWebCryptoUsage(key_op, usage_mask))
-      return Status::ErrorJwkUnrecognizedKeyop();
+    // Unrecognized key_ops are silently skipped.
+    ignore_result(JwkKeyOpToWebCryptoUsage(key_op, usage_mask));
   }
   return Status::Success();
 }
 
 // Composes a JWK key_ops List from a Web Crypto usage mask.
 // Note: Caller must assume ownership of returned instance.
 base::ListValue* CreateJwkKeyOpsFromWebCryptoUsages(
     blink::WebCryptoKeyUsageMask usage_mask) {
   base::ListValue* jwk_key_ops = new base::ListValue();
   for (size_t i = 0; i < arraysize(kJwkWebCryptoUsageMap); ++i) {
@@ skipping 80 matching lines @@
 
 bool IsAlgorithmAsymmetric(blink::WebCryptoAlgorithmId alg_id) {
   // TODO(padolph): include all other asymmetric algorithms once they are
   // defined, e.g. EC and DH.
   return IsAlgorithmRsa(alg_id);
 }
 
 }  // namespace webcrypto
 
 }  // namespace content