Credential Manager: Add platform-exposed Credential objects.

Source/platform/credentialmanager/PlatformLocalCredential.h

Index: Source/platform/credentialmanager/PlatformLocalCredential.h
diff --git a/Source/platform/credentialmanager/PlatformLocalCredential.h b/Source/platform/credentialmanager/PlatformLocalCredential.h
new file mode 100644
index 0000000000000000000000000000000000000000..bb3cce2b2d6e92156d2dc9413a346f2c2f333f4b
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+++ b/Source/platform/credentialmanager/PlatformLocalCredential.h
@@ -0,0 +1,30 @@
+// 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 PlatformLocalCredential_h
+#define PlatformLocalCredential_h
+
+#include "platform/credentialmanager/PlatformCredential.h"
+#include "platform/heap/Handle.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT PlatformLocalCredential FINAL : public PlatformCredential {
+    WTF_MAKE_NONCOPYABLE(PlatformLocalCredential);
+public:
+    static PlatformLocalCredential* create(const String& id, const String& name, const String& avatarURL, const String& password);
+    virtual ~PlatformLocalCredential();
+
+    const String& password() const { return m_password; }
+
+private:
+    PlatformLocalCredential(const String& id, const String& name, const String& avatarURL, const String& password);
+
+    String m_password;
+};
+
+} // namespace blink
+
+#endif // PlatformLocalCredential_h