SkPDF/Deflate: clean up old SkFlate code

tests/PDFDeflateWStreamTest.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDeflate.h"
 #include "SkRandom.h"
 #include "Test.h"
@@ skipping 16 matching lines @@
                         SkTMin(size - j, random.nextRangeU(1, 400));
                 if (!deflateWStream.write(&buffer[j], writeSize)) {
                     ERRORF(r, "something went wrong.");
                     return;
                 }
                 j += writeSize;
             }
         }
         SkAutoTDelete<SkStreamAsset> compressed(
                 dynamicMemoryWStream.detachAsStream());
-
-        SkDynamicMemoryWStream decompressedDynamicMemoryWStream;
-        SkAssertResult(SkFlate::Inflate(compressed,
-                                        &decompressedDynamicMemoryWStream));
-
-        SkAutoTDelete<SkStreamAsset> decompressed(
-                decompressedDynamicMemoryWStream.detachAsStream());
+        SkAutoTDelete<SkStreamAsset> decompressed(SkInflate(compressed));
 
         if (decompressed->getLength() != size) {
             ERRORF(r, "Decompression failed to get right size [%d]."
                    " %u != %u", i,  (unsigned)(decompressed->getLength()),
                    (unsigned)size);
             SkString s = SkStringPrintf("/tmp/deftst_compressed_%d", i);
             SkFILEWStream o(s.c_str());
             o.writeStream(compressed.get(), compressed->getLength());
             compressed->rewind();
 
             s = SkStringPrintf("/tmp/deftst_input_%d", i);
             SkFILEWStream o2(s.c_str());
             o2.write(&buffer[0], size);
 
             continue;
         }
         uint32_t minLength = SkTMin(size,
                                     (uint32_t)(decompressed->getLength()));
         for (uint32_t i = 0; i < minLength; ++i) {
             uint8_t c;
             SkDEBUGCODE(size_t rb =)decompressed->read(&c, sizeof(uint8_t));
             SkASSERT(sizeof(uint8_t) == rb);
             if (buffer[i] != c) {
                 ERRORF(r, "Decompression failed at byte %u.", (unsigned)i);
                 break;
             }
         }
     }
 }