Move favicon callbacks to favicon_base

components/favicon_base/favicon_callback.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 COMPONENTS_FAVICON_BASE_FAVICON_CALLBACK_H_
+#define COMPONENTS_FAVICON_BASE_FAVICON_CALLBACK_H_
+
+#include <vector>
+
+#include "base/callback.h"
+
+namespace favicon_base {
+
+struct FaviconBitmapResult;
+struct FaviconImageResult;
+
+// Callback for functions that can be used to return a |gfx::Image| and the
+// |GURL| it is loaded from. They are returned as a |FaviconImageResult| object.
+typedef base::Callback<void(const FaviconImageResult&)> FaviconImageCallback;
+
+// Callback for functions returning raw data for a favicon. In
+// |FaviconBitmapResult|, the data is not yet converted as a |gfx::Image|.
+typedef base::Callback<void(const FaviconBitmapResult&)> FaviconRawCallback;
+
+// Callback for functions returning raw data for a favicon in multiple
+// resolution. In |FaviconBitmapResult|, the data is not yet converted as a
+// |gfx::Image|.
+typedef base::Callback<void(const std::vector<FaviconBitmapResult>&)>
+    FaviconResultsCallback;
+
+}  // namespace favicon_base
+
+#endif  // COMPONENTS_FAVICON_BASE_FAVICON_CALLBACK_H_