[webcrypto] Disable RSA key import for NSS versions less than 3.16.2.

content/child/webcrypto/status.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/status.h"
 
 namespace content {
 
 namespace webcrypto {
 
@@ skipping 133 matching lines @@
   return Status(blink::WebCryptoErrorTypeData,
                 "The provided data is too large");
 }
 
 Status Status::ErrorDataTooSmall() {
   return Status(blink::WebCryptoErrorTypeData,
                 "The provided data is too small");
 }
 
 Status Status::ErrorUnsupported() {
-  return Status(blink::WebCryptoErrorTypeNotSupported,
-                "The requested operation is unsupported");
+  return ErrorUnsupported("The requested operation is unsupported");
+}
+
+Status Status::ErrorUnsupported(const std::string message) {
+  return Status(blink::WebCryptoErrorTypeNotSupported, message);
 }
 
 Status Status::ErrorUnexpected() {
   return Status(blink::WebCryptoErrorTypeUnknown,
                 "Something unexpected happened...");
 }
 
 Status Status::ErrorInvalidAesGcmTagLength() {
   return Status(
       blink::WebCryptoErrorTypeData,
@@ skipping 48 matching lines @@
       error_type_(error_type),
       error_details_(error_details_utf8) {
 }
 
 Status::Status(Type type) : type_(type) {
 }
 
 }  // namespace webcrypto
 
 }  // namespace content