Remove uses of SkImageDecoder from samplecode

samplecode/SampleUnpremul.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 #include "sk_tool_utils.h"
+#include "DecodeFile.h"
 #include "Resources.h"
 #include "SampleCode.h"
 #include "SkBlurMask.h"
 #include "SkBlurDrawLooper.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
-#include "SkForceLinking.h"
-#include "SkImageDecoder.h"
 #include "SkOSFile.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkSystemEventTypes.h"
 #include "SkTypes.h"
 #include "SkUtils.h"
 #include "SkView.h"
 
-__SK_FORCE_IMAGE_DECODER_LINKING;
-
 /**
  *  Interprets c as an unpremultiplied color, and returns the
  *  premultiplied equivalent.
  */
 static SkPMColor premultiply_unpmcolor(SkPMColor c) {
     U8CPU a = SkGetPackedA32(c);
     U8CPU r = SkGetPackedR32(c);
     U8CPU g = SkGetPackedG32(c);
     U8CPU b = SkGetPackedB32(c);
     return SkPreMultiplyARGB(a, r, g, b);
@@ skipping 121 matching lines @@
         }
         fCurrFile = SkOSPath::Join(fResPath.c_str(), basename.c_str());
         this->decodeCurrFile();
     }
 
     void decodeCurrFile() {
         if (fCurrFile.size() == 0) {
             fDecodeSucceeded = false;
             return;
         }
-        SkFILEStream stream(fCurrFile.c_str());
-        SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(&stream));
-        if (nullptr == decoder.get()) {
-            fDecodeSucceeded = false;
-            return;
-        }
-        if (!fPremul) {
-            decoder->setRequireUnpremultipliedColors(true);
-        }
-        fDecodeSucceeded = decoder->decode(&stream, &fBitmap, kN32_SkColorType,
-                SkImageDecoder::kDecodePixels_Mode) != SkImageDecoder::kFailure;
+        fDecodeSucceeded = decode_file(fCurrFile.c_str(), &fBitmap, kN32_SkColorType, !fPremul);
         this->inval(nullptr);
     }
 
     void togglePremul() {
         fPremul = !fPremul;
         this->decodeCurrFile();
     }
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() {
     return new UnpremulView(GetResourcePath());
 }
 static SkViewRegister reg(MyFactory);