First phase of Mac Keychain integration. For the overall plan, see the design...

chrome/browser/keychain_mac.h

+// Copyright (c) 2009 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_BROWSER_KEYCHAIN_MAC_H_
+#define CHROME_BROWSER_KEYCHAIN_MAC_H_
+
+#include <Security/Security.h>
+
+#include "base/basictypes.h"
+
+// Wraps the KeychainServices API in a very thin layer, to allow it to be
+// mocked out for testing.
+
+// See Keychain Services documentation for function documentation, as these call
+// through directly to their Keychain Services equivalents (Foo ->
+// SecKeychainFoo). The only exception is Free, which should be used for
+// anything returned from this class that would normally be freed with
+// CFRelease (to aid in testing).
+class MacKeychain {
+ public:
+  MacKeychain() {}
+  virtual ~MacKeychain() {}
+
+  virtual OSStatus ItemCopyAttributesAndData(
+      SecKeychainItemRef itemRef, SecKeychainAttributeInfo *info,
+      SecItemClass *itemClass, SecKeychainAttributeList **attrList,
+      UInt32 *length, void **outData) const;
+
+  virtual OSStatus ItemFreeAttributesAndData(SecKeychainAttributeList *attrList,
+                                             void *data) const;
+
+  virtual OSStatus SearchCreateFromAttributes(
+      CFTypeRef keychainOrArray, SecItemClass itemClass,
+      const SecKeychainAttributeList *attrList,
+      SecKeychainSearchRef *searchRef) const;
+
+  virtual OSStatus SearchCopyNext(SecKeychainSearchRef searchRef,
+                                  SecKeychainItemRef *itemRef) const;
+
+  // Calls CFRelease on the given ref, after checking that |ref| is non-NULL.
+  virtual void Free(CFTypeRef ref) const;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MacKeychain);
+};
+
+#endif  // CHROME_BROWSER_KEYCHAIN_MAC_H_