enterprise.platformKeys: Copy-on-read the 'algorithm' member of Key objects.

chrome/renderer/extensions/enterprise_platform_keys_natives.h

 // 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.
 
 #ifndef CHROME_RENDERER_EXTENSIONS_ENTERPRISE_PLATFORM_KEYS_NATIVES_H_
 #define CHROME_RENDERER_EXTENSIONS_ENTERPRISE_PLATFORM_KEYS_NATIVES_H_
 
 #include "extensions/renderer/object_backed_native_handler.h"
 #include "v8/include/v8.h"
 
 namespace extensions {
 class ScriptContext;
 
 class EnterprisePlatformKeysNatives : public ObjectBackedNativeHandler {
  public:
   explicit EnterprisePlatformKeysNatives(ScriptContext* context);
 
  private:
   // Normalizes algorithm parameters, and then validates the expected parameters
   // for the algorithm/operation combination.
   // Expects the following arguments in |call_info|:
   //   |parameters|: An object containing the parameters to normalize.
   //   |operation|: A string describing the operation. Supported operations are
   //     "GenerateKey", "Sign" and "Verify".
   // Returns the normalized dictionary on success, or null if some required
-  // parameters are missing or not supported.
+  // parameters are missing or not supported. Note that it returns untyped
+  // arrays instead of typed arrays (e.g. for RSA publicExponent).
   void NormalizeAlgorithm(const v8::FunctionCallbackInfo<v8::Value>& call_info);
 
   DISALLOW_COPY_AND_ASSIGN(EnterprisePlatformKeysNatives);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_ENTERPRISE_PLATFORM_KEYS_NATIVES_H_