SkPDF/Deflate: clean up old SkFlate code

tests/PDFPrimitivesTest.cpp

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
@@ skipping 81 matching lines @@
     {
         char streamBytes2[] = "This is a longer string, so that compression "
                               "can do something with it. With shorter strings, "
                               "the short circuit logic cuts in and we end up "
                               "with an uncompressed string.";
         SkAutoDataUnref streamData2(SkData::NewWithCopy(streamBytes2,
                                                         strlen(streamBytes2)));
         SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData2.get()));
 
         SkDynamicMemoryWStream compressedByteStream;
-        SkFlate::Deflate(streamData2.get(), &compressedByteStream);
-        SkAutoDataUnref compressedData(compressedByteStream.copyToData());
+        SkDeflateWStream deflateWStream(&compressedByteStream);
+        deflateWStream.write(streamBytes2, strlen(streamBytes2));
+        deflateWStream.finalize();
 
         SkDynamicMemoryWStream expected;
         expected.writeText("<</Filter /FlateDecode\n/Length 116>> stream\n");
-        expected.write(compressedData->data(), compressedData->size());
+        compressedByteStream.writeToStream(&expected);
+        compressedByteStream.reset();
         expected.writeText("\nendstream");
         SkAutoDataUnref expectedResultData2(expected.copyToData());
         SkString result = emit_to_string(*stream);
         ASSERT_EQL(reporter,
                    result,
                    (const char*)expectedResultData2->data(),
                    expectedResultData2->size());
     }
 }
 
@@ skipping 288 matching lines @@
     // Filter just created; should be unvisited.
     REPORTER_ASSERT(reporter, !filter->visited());
     SkPaint paint;
     paint.setImageFilter(filter.get());
     canvas->drawRect(SkRect::MakeWH(100, 100), paint);
     doc->close();
 
     // Filter was used in rendering; should be visited.
     REPORTER_ASSERT(reporter, filter->visited());
 }