Fix MacOS build error from 36d08c5c90c7

tests/CachedDecodingPixelRefTest.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 "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
-#include "SkForceLinking.h"
 #include "SkImageDecoder.h"
 #include "SkImagePriv.h"
 #include "SkLazyPixelRef.h"
 #include "SkCachingPixelRef.h"
 #include "SkScaledImageCache.h"
 #include "SkStream.h"
 
 #include "Test.h"
 #include "TestClassDef.h"
 
-__SK_FORCE_IMAGE_DECODER_LINKING;
-
 /**
  * Fill this bitmap with some color.
  */
 static void make_test_image(SkBitmap* bm) {
     static const int W = 50, H = 50;
     static const SkBitmap::Config config = SkBitmap::kARGB_8888_Config;
     bm->setConfig(config, W, H);
     bm->allocPixels();
     bm->eraseColor(SK_ColorBLACK);
     SkCanvas canvas(*bm);
@@ skipping 126 matching lines @@
         bool comparePixels = (SkImageEncoder::kPNG_Type == type);
         compare_bitmaps(reporter, original, lazy, comparePixels);
     }
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////
 /**
  *  This checks to see that a SkLazyPixelRef works as advertised.
  */
-bool install_skLazyPixelRef(SkData* encoded, SkBitmap* dst) {
+static bool install_skLazyPixelRef(SkData* encoded, SkBitmap* dst) {
     static const SkBitmapFactory::DecodeProc decoder =
         &(SkImageDecoder::DecodeMemoryToTarget);
     return simple_bitmap_factory(decoder, encoded, dst);
 }
 DEF_TEST(LazyPixelRef, reporter) {
     test_three_encodings(reporter, install_skLazyPixelRef);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 /**
  *  This checks to see that a SkCachingPixelRef works as advertised.
  */
-bool install_skCachingPixelRef(SkData* encoded, SkBitmap* dst) {
+static bool install_skCachingPixelRef(SkData* encoded, SkBitmap* dst) {
     return SkCachingPixelRef::Install(
         SkNEW_ARGS(SkDecodingImageGenerator, (encoded)), dst);
 }
 DEF_TEST(CachingPixelRef, reporter) {
     test_three_encodings(reporter, install_skCachingPixelRef);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 /**
  *  This checks to see that a SkDecodingImageGenerator works as advertised.
  */
 DEF_TEST(DecodingImageGenerator, reporter) {
     test_three_encodings(reporter, SkDecodingImageGenerator::Install);
 }