More Windows 64b compilation warning fixes

src/pdf/SkPDFDevice.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 "SkPDFDevice.h"
 
 #include "SkAnnotation.h"
@@ skipping 102 matching lines @@
     SkScalar xAdj = SkFixedToScalar(xAdv);
     SkScalar yAdj = SkFixedToScalar(yAdv);
     if (paint.getTextAlign() == SkPaint::kCenter_Align) {
         xAdj = SkScalarHalf(xAdj);
         yAdj = SkScalarHalf(yAdj);
     }
     *x = *x - xAdj;
     *y = *y - yAdj;
 }
 
-static size_t max_glyphid_for_typeface(SkTypeface* typeface) {
+static int max_glyphid_for_typeface(SkTypeface* typeface) {
     SkAutoResolveDefaultTypeface autoResolve(typeface);
     typeface = autoResolve.get();
     return typeface->countGlyphs() - 1;
 }
 
 typedef SkAutoSTMalloc<128, uint16_t> SkGlyphStorage;
 
 static size_t force_glyph_encoding(const SkPaint& paint, const void* text,
                                    size_t len, SkGlyphStorage* storage,
                                    uint16_t** glyphIDs) {
@@ skipping 2004 matching lines @@
 }
 
 bool SkPDFDevice::onReadPixels(const SkBitmap& bitmap, int x, int y,
                                SkCanvas::Config8888) {
     return false;
 }
 
 bool SkPDFDevice::allowImageFilter(SkImageFilter*) {
     return false;
 }