Create AvatarMenuModel for the new avatar menu interface.

chrome/browser/profiles/profile_info_interface.h

Index: chrome/browser/profiles/profile_info_interface.h
diff --git a/chrome/browser/profiles/profile_info_interface.h b/chrome/browser/profiles/profile_info_interface.h
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index 0000000000000000000000000000000000000000..b43c4c1dc39837cadd571033d0199b79524c2736
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+++ b/chrome/browser/profiles/profile_info_interface.h
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+// Copyright (c) 2011 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_PROFILES_PROFILE_INFO_INTERFACE_H_
+#define CHROME_BROWSER_PROFILES_PROFILE_INFO_INTERFACE_H_
+
+#include "base/file_path.h"
+#include "base/string16.h"
+
+namespace gfx {
+class Image;
+}
+
+// This abstract interface is used to query the profiles backend for information
+// about the different profiles. Its sole concrete implementation is the
+// ProfileInfoCache. This interface exists largely to assist in testing.
+class ProfileInfoInterface {
+ public:
+  virtual size_t GetNumberOfProfiles() const = 0;
+
+  virtual size_t GetIndexOfProfileWithPath(
+      const FilePath& profile_path) const = 0;
+
+  virtual string16 GetNameOfProfileAtIndex(size_t index) const = 0;
+
+  virtual FilePath GetPathOfProfileAtIndex(size_t index) const = 0;
+
+  virtual const gfx::Image& GetAvatarIconOfProfileAtIndex(
+      size_t index) const = 0;
+
+ protected:
+  virtual ~ProfileInfoInterface() {}
+};
+
+#endif  // CHROME_BROWSER_PROFILES_PROFILE_INFO_INTERFACE_H_