Added bounds checking to GetNameFromTT to handle corrupt files.

core/include/fxge/fx_font.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_INCLUDE_FXGE_FX_FONT_H_
 #define CORE_INCLUDE_FXGE_FX_FONT_H_
 
 #include <map>
@@ skipping 522 matching lines @@
 
 class IFX_GSUBTable {
  public:
   static IFX_GSUBTable* Create(CFX_Font* pFont);
   virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) = 0;
 
  protected:
   virtual ~IFX_GSUBTable() {}
 };
 
-CFX_ByteString GetNameFromTT(const uint8_t* name_table, FX_DWORD name);
+CFX_ByteString GetNameFromTT(const uint8_t* name_table,
+                             FX_DWORD name_table_size,
+                             FX_DWORD name);
 
 int PDF_GetStandardFontName(CFX_ByteString* name);
 
 #endif  // CORE_INCLUDE_FXGE_FX_FONT_H_