Even more win64 warning fixes

src/pdf/SkPDFFont.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "SkData.h"
@@ skipping 216 matching lines @@
 
     // A PFA has to be converted for PDF.
     size_t hexDataLen;
     if (parsePFA((const char*)src, srcLen, headerLen, &hexDataLen, dataLen,
                  trailerLen)) {
         const size_t length = *headerLen + *dataLen + *trailerLen;
         SkASSERT(length > 0);
         SkAutoTMalloc<uint8_t> buffer(length);
 
         memcpy(buffer.get(), src, *headerLen);
-        uint8_t* const resultData = &(buffer[*headerLen]);
+        uint8_t* const resultData = &(buffer[SkToInt(*headerLen)]);
 
         const uint8_t* hexData = src + *headerLen;
         const uint8_t* trailer = hexData + hexDataLen;
         size_t outputOffset = 0;
         uint8_t dataByte = 0;  // To hush compiler.
         bool highNibble = true;
         for (; hexData < trailer; hexData++) {
             int8_t curNibble = hexToBin(*hexData);
             if (curNibble < 0) {
                 continue;
             }
             if (highNibble) {
                 dataByte = curNibble << 4;
                 highNibble = false;
             } else {
                 dataByte |= curNibble;
                 highNibble = true;
                 resultData[outputOffset++] = dataByte;
             }
         }
         if (!highNibble) {
             resultData[outputOffset++] = dataByte;
         }
         SkASSERT(outputOffset == *dataLen);
 
-        uint8_t* const resultTrailer = &(buffer[*headerLen + outputOffset]);
+        uint8_t* const resultTrailer = &(buffer[SkToInt(*headerLen + outputOffset)]);
         memcpy(resultTrailer, src + *headerLen + hexDataLen, *trailerLen);
 
         return SkData::NewFromMalloc(buffer.detach(), length);
     }
     return NULL;
 }
 
 // scale from em-units to base-1000, returning as a SkScalar
 SkScalar scaleFromFontUnits(int16_t val, uint16_t emSize) {
     SkScalar scaled = SkIntToScalar(val);
@@ skipping 1215 matching lines @@
 
     insert("FontBBox", makeFontBBox(bbox, 1000))->unref();
     insertInt("FirstChar", 1);
     insertInt("LastChar", lastGlyphID() - firstGlyphID() + 1);
     insert("Widths", widthArray.get());
     insertName("CIDToGIDMap", "Identity");
 
     populateToUnicodeTable(NULL);
     return true;
 }