Review and cleanup lint warnings.

core/include/fpdfapi/fpdf_objects.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_FPDFAPI_FPDF_OBJECTS_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_OBJECTS_H_
 
 #include <map>
 #include <set>
+#include <string>

[Tom Sepez, 2016/03/08 19:27:04]

Nah, std::string isn't used in pdfium, and this is a cpplint.py parser
shortcoming that it thinks we need it.  Maybe change the variable name "string"
in a few places until pylint shuts up ...

[dsinclair, 2016/03/08 21:08:01]

Done.

 
 #include "core/include/fxcrt/fx_coordinates.h"
 #include "core/include/fxcrt/fx_system.h"
 
 class CPDF_Array;
 class CPDF_Boolean;
 class CPDF_Dictionary;
 class CPDF_IndirectObjectHolder;
 class CPDF_Name;
 class CPDF_Null;
@@ skipping 522 matching lines @@
   iterator end() { return m_IndirectObjs.end(); }
   const_iterator end() const { return m_IndirectObjs.end(); }
 
  protected:
   CPDF_Parser* m_pParser;
   FX_DWORD m_LastObjNum;
   std::map<FX_DWORD, CPDF_Object*> m_IndirectObjs;
 };
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_OBJECTS_H_