Review and cleanup lint warnings.

core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp

 // 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
 
 #include "core/src/fpdfapi/fpdf_page/pageint.h"
 
 #include <limits.h>
 
 #include <memory>
+#include <string>

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

ditto

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

Done.

 #include <utility>
 #include <vector>
 
 #include "core/include/fpdfapi/fpdf_module.h"
 #include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxcrt/fx_safe_types.h"
 #include "third_party/base/numerics/safe_conversions_impl.h"
 
 namespace {
 
@@ skipping 932 matching lines @@
     for (int i = 0; i < m_nOutputs; i++) {
       if (results[i] < m_pRanges[i * 2]) {
         results[i] = m_pRanges[i * 2];
       } else if (results[i] > m_pRanges[i * 2 + 1]) {
         results[i] = m_pRanges[i * 2 + 1];
       }
     }
   }
   return TRUE;
 }