Revert "Implement chrome.platformKeys.getKeyPair()."

chrome/renderer/resources/extensions/platform_keys/get_public_key.js

-// Copyright 2015 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.
-
-var internalAPI = require('platformKeys.internalAPI');
-
-var normalizeAlgorithm =
-    requireNative('platform_keys_natives').NormalizeAlgorithm;
-
-function combineAlgorithms(algorithm, importParams) {
-  if (importParams.name === undefined) {
-    importParams.name = algorithm.name;
-  }
-
-  // Verify whether importParams.hash equals
-  //   { name: 'none' }
-  if (importParams.hash &&
-      importParams.hash.name.toLowerCase() === 'none') {
-    if (Object.keys(importParams.hash).length != 1 ||
-        Object.keys(importParams).length != 2) {
-      // 'name' must be the only hash property in this case.
-      throw new Error('A required parameter was missing or out-of-range');
-    }
-    importParams.hash.name = 'none';
-  } else {
-    // Otherwise apply WebCrypto's algorithm normalization.
-    importParams = normalizeAlgorithm(importParams, 'ImportKey');
-    if (!importParams) {
-      //    throw CreateSyntaxError();
-      throw new Error('A required parameter was missing or out-of-range');
-    }
-  }
-
-  // internalAPI.getPublicKey returns publicExponent as ArrayBuffer, but it
-  // should be a Uint8Array.
-  if (algorithm.publicExponent) {
-    algorithm.publicExponent = new Uint8Array(algorithm.publicExponent);
-  }
-
-  for (var key in importParams) {
-    algorithm[key] = importParams[key];
-  }
-
-  return algorithm;
-}
-
-function getPublicKey(cert, importParams, callback) {
-  internalAPI.getPublicKey(cert, function(publicKey, algorithm) {
-    var combinedAlgorithm = combineAlgorithms(algorithm, importParams);
-    callback(publicKey, combinedAlgorithm);
-  });
-}
-
-exports.getPublicKey = getPublicKey;