Fix MacOS build error from 36d08c5c90c7

BUG=

Review URL: https://codereview.chromium.org/105453005

git-svn-id: http://skia.googlecode.com/svn/trunk@12506 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/CachedDecodingPixelRefTest.cpp b/tests/CachedDecodingPixelRefTest.cpp
index af1df10..0706ab1 100644
--- a/tests/CachedDecodingPixelRefTest.cpp
+++ b/tests/CachedDecodingPixelRefTest.cpp
@@ -9,7 +9,6 @@
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
-#include "SkForceLinking.h"
 #include "SkImageDecoder.h"
 #include "SkImagePriv.h"
 #include "SkLazyPixelRef.h"
@@ -20,8 +19,6 @@
 #include "Test.h"
 #include "TestClassDef.h"
 
-__SK_FORCE_IMAGE_DECODER_LINKING;
-
 /**
  * Fill this bitmap with some color.
  */
@@ -168,7 +165,7 @@
 /**
  *  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);
@@ -181,7 +178,7 @@
 /**
  *  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);
 }