Fix a bunch of sign mismatch warnings.

core/src/fpdfapi/fpdf_font/fpdf_font.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 "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../../include/fpdfapi/fpdf_resource.h"
@@ skipping 20 matching lines @@
 CPDF_FontGlobals::~CPDF_FontGlobals() {
   ClearAll();
   FX_Free(m_pContrastRamps);
 }
 class CFX_StockFontArray {
  public:
   CFX_StockFontArray() {
     FXSYS_memset(m_pStockFonts, 0, sizeof(m_pStockFonts));
   }
   ~CFX_StockFontArray() {
-    for (int i = 0; i < FX_ArraySize(m_pStockFonts); i++) {
+    for (size_t i = 0; i < FX_ArraySize(m_pStockFonts); i++) {
       if (!m_pStockFonts[i])
         continue;
       CPDF_Dictionary* pFontDict = m_pStockFonts[i]->GetFontDict();
       if (pFontDict)
         pFontDict->Release();
       delete m_pStockFonts[i];
     }
   }
   CPDF_Font* GetFont(int index) const {
     if (index < 0 || index >= FX_ArraySize(m_pStockFonts))
@@ skipping 534 matching lines @@
         ch = 0;
       }
     }
     return result;
   }
   if (buf[0] == '(') {
   }
   return result;
 }
 void CPDF_ToUnicodeMap::Load(CPDF_Stream* pStream) {
-  int CIDSet = 0;
+  size_t CIDSet = 0;

[Tom Sepez, 2015/09/25 16:06:37]

Shouldn't this be CIDSET_UNKNOW?

   CPDF_StreamAcc stream;
   stream.LoadAllData(pStream, FALSE);
   CPDF_SimpleParser parser(stream.GetData(), stream.GetSize());
   while (1) {
     CFX_ByteStringC word = parser.GetWord();
     if (word.IsEmpty()) {
       break;
     }
     if (word == FX_BSTRC("beginbfchar")) {
       while (1) {
@@ skipping 1173 matching lines @@
 CPDF_Type3Char::CPDF_Type3Char() {
   m_pForm = NULL;
   m_pBitmap = NULL;
   m_bPageRequired = FALSE;
   m_bColored = FALSE;
 }
 CPDF_Type3Char::~CPDF_Type3Char() {
   delete m_pForm;
   delete m_pBitmap;
 }