Rename the shared impl files.

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/memory/scoped_ptr.h"
-#include "ppapi/c/pp_bool.h"
-#include "ppapi/c/pp_stdint.h"
-#include "ppapi/shared_impl/ppapi_shared_export.h"
-
-struct PP_FontDescription_Dev;
-
-namespace ppapi {
-
-class PPAPI_SHARED_EXPORT 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 ppapi
-
-#endif  // PPAPI_SHARED_IMPL_FONT_IMPL_H_