Rename the shared impl files.

ppapi/shared_impl/font_impl.cc

-// 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.
-
-#include "ppapi/shared_impl/font_impl.h"
-
-#include "ppapi/c/dev/ppb_font_dev.h"
-
-namespace ppapi {
-
-// static
-bool FontImpl::IsPPFontDescriptionValid(const PP_FontDescription_Dev& desc) {
-  // Check validity of string. We can't check the actual text since we could
-  // be on the wrong thread and don't know if we're in the plugin or the host.
-  if (desc.face.type != PP_VARTYPE_STRING &&
-      desc.face.type != PP_VARTYPE_UNDEFINED)
-    return false;
-
-  // Check enum ranges.
-  if (static_cast<int>(desc.family) < PP_FONTFAMILY_DEFAULT ||
-      static_cast<int>(desc.family) > PP_FONTFAMILY_MONOSPACE)
-    return false;
-  if (static_cast<int>(desc.weight) < PP_FONTWEIGHT_100 ||
-      static_cast<int>(desc.weight) > PP_FONTWEIGHT_900)
-    return false;
-
-  // Check for excessive sizes which may cause layout to get confused.
-  if (desc.size > 200)
-    return false;
-
-  return true;
-}
-
-}  // namespace ppapi