Make SkTDArray accessors const-friendly

src/pdf/SkPDFDocument.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 "SkPDFCatalog.h"
@@ skipping 25 matching lines @@
                                     const SkTDArray<SkPDFPage*>& pages,
                                     SkTDArray<SkPDFObject*>* substitutes) {
     SkASSERT(catalog);
     SkASSERT(substitutes);
 
     SkPDFGlyphSetMap usage;
     for (int i = 0; i < pages.count(); ++i) {
         usage.merge(pages[i]->getFontGlyphUsage());
     }
     SkPDFGlyphSetMap::F2BIter iterator(usage);
-    SkPDFGlyphSetMap::FontGlyphSetPair* entry = iterator.next();
+    const SkPDFGlyphSetMap::FontGlyphSetPair* entry = iterator.next();
     while (entry) {
         SkPDFFont* subsetFont =
             entry->fFont->getFontSubset(entry->fGlyphSet);
         if (subsetFont) {
             catalog->setSubstitute(entry->fFont, subsetFont);
             substitutes->push(subsetFont);  // Transfer ownership to substitutes
         }
         entry = iterator.next();
     }
 }
@@ skipping 210 matching lines @@
         fTrailerDict->insertInt("Size", int(objCount));
         fTrailerDict->insert("Root", new SkPDFObjRef(fDocCatalog))->unref();
     }
 
     stream->writeText("trailer\n");
     fTrailerDict->emitObject(stream, fCatalog.get(), false);
     stream->writeText("\nstartxref\n");
     stream->writeBigDecAsText(fXRefFileOffset);
     stream->writeText("\n%%EOF");
 }