Remove image decoder and encoder autoregistration

src/images/SkImageEncoder_argb.cpp

Index: src/images/SkImageEncoder_argb.cpp
diff --git a/src/images/SkImageEncoder_argb.cpp b/src/images/SkImageEncoder_argb.cpp
index 296491eef81864ce0c7f48ec0af7b99c1f25f7be..9bd151b538138001f113385ece742a68d8700902 100644
--- a/src/images/SkImageEncoder_argb.cpp
+++ b/src/images/SkImageEncoder_argb.cpp
@@ -5,19 +5,12 @@
  * found in the LICENSE file.
  */
 
-#include "SkImageEncoder.h"
+#include "SkImageEncoder_argb.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkStream.h"
 #include "SkTemplates.h"
 
-class SkARGBImageEncoder : public SkImageEncoder {
-protected:
-    virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
-
-private:
-    typedef SkImageEncoder INHERITED;
-};
 
 typedef void (*ScanlineImporter)(const uint8_t* in, uint8_t* argb, int width,
                                  const SkPMColor* SK_RESTRICT ctable);
@@ -86,7 +79,7 @@ static ScanlineImporter ChooseImporter(SkColorType ct) {
     }
 }
 
-bool SkARGBImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bitmap, int) {
+bool SkImageEncoder_argb::onEncode(SkWStream* stream, const SkBitmap& bitmap, int) {
     const ScanlineImporter scanline_import = ChooseImporter(bitmap.colorType());
     if (NULL == scanline_import) {
         return false;
@@ -111,8 +104,3 @@ bool SkARGBImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bitmap, int
 
     return true;
 }
-
-
-///////////////////////////////////////////////////////////////////////////////
-DEFINE_ENCODER_CREATOR(ARGBImageEncoder);
-///////////////////////////////////////////////////////////////////////////////