Make the Pepper proxy support in-process font rendering.

ppapi/shared_impl/font_impl.h

+// 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 PPAPI_SHARED_IMPL_FONT_IMPL_H_
+#define PPAPI_SHARED_IMPL_FONT_IMPL_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_stdint.h"
+
+struct PP_FontDescription_Dev;
+
+namespace pp {
+namespace shared_impl {
+
+class FontImpl {
+ public:
+  // Validates the parameters in thee description. Can be called on any thread.
+  static bool IsPPFontDescriptionValid(const PP_FontDescription_Dev& desc);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FontImpl);
+};
+
+}  // namespace shared_impl
+}  // namespace pp
+
+#endif  // PPAPI_SHARED_IMPL_FONT_IMPL_H_