Add the lazy decoder from PictureFlags to SkImageDecoder

tools/lua/lua_pictures.cpp

Index: tools/lua/lua_pictures.cpp
diff --git a/tools/lua/lua_pictures.cpp b/tools/lua/lua_pictures.cpp
index f1bca287ad490dae592c4ed33ef00bf6bbb8053b..355a82352aea28d4a558f1b51a1019f226bcc7ce 100644
--- a/tools/lua/lua_pictures.cpp
+++ b/tools/lua/lua_pictures.cpp
@@ -5,6 +5,7 @@
  * found in the LICENSE file.
  */
 
+#include "LazyDecodeBitmap.h"
 #include "SkLua.h"
 #include "SkLuaCanvas.h"
 #include "SkPicture.h"
@@ -15,9 +16,6 @@
 #include "picture_utils.h"
 #include "SkOSFile.h"
 #include "SkImageDecoder.h"
-#include "SkForceLinking.h"
-
-__SK_FORCE_IMAGE_DECODER_LINKING;
 
 extern "C" {
     #include "lua.h"
@@ -30,9 +28,6 @@ static const char gEndCanvasFunc[] = "sk_scrape_endcanvas";
 static const char gAccumulateFunc[] = "sk_scrape_accumulate";
 static const char gSummarizeFunc[] = "sk_scrape_summarize";
 
-// PictureRenderingFlags.cpp
-extern bool lazy_decode_bitmap(const void* buffer, size_t size, SkBitmap*);
-
 // Example usage for the modulo flag:
 // for i in {0..5}; do lua_pictures --skpPath SKP_PATH -l YOUR_SCRIPT --modulo $i 6 &; done
 DEFINE_string(modulo, "", "[--modulo <remainder> <divisor>]: only run tests for which "
@@ -46,7 +41,7 @@ static SkPicture* load_picture(const char path[]) {
     SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path));
     SkPicture* pic = NULL;
     if (stream.get()) {
-        pic = SkPicture::CreateFromStream(stream.get(), &lazy_decode_bitmap);
+        pic = SkPicture::CreateFromStream(stream.get(), &sk_tools::LazyDecodeBitmap);
     }
     return pic;
 }