Revert of Remove uses of SkImageDecoder from gms

gm/filterbitmap.cpp

Index: gm/filterbitmap.cpp
diff --git a/gm/filterbitmap.cpp b/gm/filterbitmap.cpp
index 51a8064d801a91057ccaee75008e17e1c35b1a32..5c63910a7842db484a3eed0595f4cb475613f0b8 100644
--- a/gm/filterbitmap.cpp
+++ b/gm/filterbitmap.cpp
@@ -9,6 +9,7 @@
 
 #include "Resources.h"
 #include "SkGradientShader.h"
+#include "SkImageDecoder.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 
@@ -195,17 +196,26 @@
       }
 
       void makeBitmap() override {
-        if (!GetResourceAsBitmap(fFilename.c_str(), &fBM)) {
-            fBM.allocN32Pixels(1, 1);
-            fBM.eraseARGB(255, 255, 0 , 0); // red == bad
-        }
-        fSize = fBM.height();
-
-        if (fConvertToG8) {
-            SkBitmap tmp;
-            fBM.copyTo(&tmp, kGray_8_SkColorType);
-            fBM = tmp;
-        }
+          SkImageDecoder* codec = nullptr;
+          SkString resourcePath = GetResourcePath(fFilename.c_str());
+          SkFILEStream stream(resourcePath.c_str());
+          if (stream.isValid()) {
+              codec = SkImageDecoder::Factory(&stream);
+          }
+          if (codec) {
+              stream.rewind();
+              codec->decode(&stream, &fBM, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
+              delete codec;
+          } else {
+              fBM.allocN32Pixels(1, 1);
+              *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
+          }
+          fSize = fBM.height();
+          if (fConvertToG8) {
+              SkBitmap tmp;
+              fBM.copyTo(&tmp, kGray_8_SkColorType);
+              fBM = tmp;
+          }
       }
 private:
     const bool fConvertToG8;