Fixes gn-check errors with enable_plugins=false.

content/browser/renderer_host/font_utils_linux.cc

 // 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.
 
 #include <fcntl.h>
 #include <fontconfig/fontconfig.h>
 #include <stddef.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <string>
 
 #include "base/posix/eintr_wrapper.h"
-#include "ppapi/c/private/pp_private_font_charset.h"
-#include "ppapi/c/trusted/ppb_browser_font_trusted.h"
+
+// TODO(crbug/685022): Guard the inclusion of ppapi headers with
+// BUILDFLAG(ENABLE_PLUGINS).
+#include "ppapi/c/private/pp_private_font_charset.h"  // nogncheck
+#include "ppapi/c/trusted/ppb_browser_font_trusted.h"  // nogncheck
 
 namespace {
 
 // MSCharSetToFontconfig translates a Microsoft charset identifier to a
 // fontconfig language set by appending to |langset|.
 // Returns true if |langset| is Latin/Greek/Cyrillic.
 bool MSCharSetToFontconfig(FcLangSet* langset, unsigned fdwCharSet) {
   // We have need to translate raw fdwCharSet values into terms that
   // fontconfig can understand. (See the description of fdwCharSet in the MSDN
   // documentation for CreateFont:
@@ skipping 226 matching lines @@
   }
 
   if (font_set)
     FcFontSetDestroy(font_set);
   FcPatternDestroy(pattern);
 
   return font_fd;
 }
 
 }  // namespace content