Modify content::GetFontTable so clients can control what is read.

chrome/renderer/pepper/pepper_flash_font_file_host.cc

 // Copyright (c) 2012 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 "chrome/renderer/pepper/pepper_flash_font_file_host.h"
 
 #include "build/build_config.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/host/dispatch_host_message.h"
@@ skipping 39 matching lines @@
 }
 
 int32_t PepperFlashFontFileHost::OnGetFontTable(
     ppapi::host::HostMessageContext* context,
     uint32_t table) {
   std::string contents;
   int32_t result = PP_ERROR_FAILED;
 #if defined(OS_LINUX) || defined(OS_OPENBSD)
   if (fd_ != -1) {
     size_t length = 0;
-    if (content::GetFontTable(fd_, table, NULL, &length)) {
+    if (content::GetFontTable(fd_, table, 0 /* offset */, NULL, &length)) {
       contents.resize(length);
       uint8_t* contents_ptr =
           reinterpret_cast<uint8_t*>(const_cast<char*>(contents.c_str()));
-      if (content::GetFontTable(fd_, table, contents_ptr, &length)) {
+      if (content::GetFontTable(fd_, table, 0 /* offset */,
+                                contents_ptr, &length)) {
         result = PP_OK;
       } else {
         contents.clear();
       }
     }
   }
 #endif  // defined(OS_LINUX) || defined(OS_OPENBSD)
 
   context->reply_msg = PpapiPluginMsg_FlashFontFile_GetFontTableReply(contents);
   return result;
 }
 
 }  // namespace chrome