Fix a few more warnings in chromium_code mode.

core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.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_page.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../fpdf_page/pageint.h"
 #include <limits.h>
@@ skipping 667 matching lines @@
             charSets.RemoveAll();
             charSets.Add(FXFONT_SYMBOL_CHARSET);
             if (IsHasCharSet(languages, charSets)) {
                 flags |= PDFFONT_SYMBOLIC;
             } else {
                 flags |= PDFFONT_NONSYMBOLIC;
             }
             pBaseDict->SetAtName(FX_BSTRC("Encoding"), "WinAnsiEncoding");
         } else {
             flags |= PDFFONT_NONSYMBOLIC;
-            int i;
+            size_t i;
             for (i = 0; i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes); i ++) {
                 charSets.RemoveAll();
                 charSets.Add(g_FX_CharsetUnicodes[i].m_Charset);
                 if (IsHasCharSet(languages, charSets)) {
                     break;
                 }
             }
             if (i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes)) {
                 CPDF_Dictionary* pEncoding = FX_NEW CPDF_Dictionary;
                 pEncoding->SetAtName(FX_BSTRC("BaseEncoding"), "WinAnsiEncoding");
@@ skipping 207 matching lines @@
                 flags |= PDFFONT_NONSYMBOLIC;
             }
             pBaseDict->SetAtName(FX_BSTRC("Encoding"), "WinAnsiEncoding");
             for (charcode = 128; charcode <= 255; charcode ++) {
                 int glyph_index = pEncoding->GlyphFromCharCode(charcode);
                 int char_width = pFont->GetGlyphWidth(glyph_index);
                 pWidths->AddInteger(char_width);
             }
         } else {
             flags |= PDFFONT_NONSYMBOLIC;
-            int i;
+            size_t i;
             for (i = 0; i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes); i ++)
                 if (g_FX_CharsetUnicodes[i].m_Charset == charset) {
                     break;
                 }
             if (i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes)) {
                 CPDF_Dictionary* pEncodingDict = FX_NEW CPDF_Dictionary;
                 pEncodingDict->SetAtName(FX_BSTRC("BaseEncoding"), "WinAnsiEncoding");
                 CPDF_Array* pArray = FX_NEW CPDF_Array;
                 pArray->AddInteger(128);
                 const FX_WCHAR* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
@@ skipping 268 matching lines @@
 void FPDFAPI_FlatPageAttr(CPDF_Dictionary* pPageDict, FX_BSTR name)
 {
     if (pPageDict->KeyExist(name)) {
         return;
     }
     CPDF_Object* pObj = FPDFAPI_GetPageAttr(pPageDict, name);
     if (pObj) {
         pPageDict->SetAt(name, pObj->Clone());
     }
 }