Remove image decoder and encoder autoregistration

src/images/SkImageEncoder_Factory.cpp

Index: src/images/SkImageEncoder_Factory.cpp
diff --git a/src/images/SkImageEncoder_Factory.cpp b/src/images/SkImageEncoder_Factory.cpp
index 2931d12eae7c42042c53b8f22a83aaae2bc7094a..c4cd522d57057d6533c18d903102c935f124fccb 100644
--- a/src/images/SkImageEncoder_Factory.cpp
+++ b/src/images/SkImageEncoder_Factory.cpp
@@ -7,17 +7,45 @@
  */
 
 #include "SkImageEncoder.h"
-
-template SkImageEncoder_EncodeReg* SkImageEncoder_EncodeReg::gHead;
+#include "SkImageDecoder_libpng.h"
+#include "SkImageDecoder_libjpeg.h"
+#include "SkImageDecoder_libwebp.h"
+#if !defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
+#include "SkImageDecoder_ktx.h"
+#endif
+#if defined(SK_BUILD_FOR_WIN)
+#include "SkImageDecoder_WIC.h"
+#endif
+#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
+#include "SkImageDecoder_CG.h"
+#endif
 
 SkImageEncoder* SkImageEncoder::Create(Type t) {
     SkImageEncoder* codec = NULL;
-    const SkImageEncoder_EncodeReg* curr = SkImageEncoder_EncodeReg::Head();
-    while (curr) {
-        if ((codec = curr->factory()(t)) != NULL) {
-            return codec;
-        }
-        curr = curr->next();
+#if !defined(SK_BUILD_FOR_MAC) && !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_WIN)
+    if ((codec = SkCreatePNGImageEncoder(t)) != NULL) {
+        return codec;
+    }
+#endif
+    if ((codec = SkCreateJPEGImageEncoder(t)) != NULL) {
+        return codec;
+    }
+    if ((codec = SkCreateWEBPImageEncoder(t)) != NULL) {
+        return codec;
+    }
+#if !defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
+    if ((codec = SkCreateKTXImageEncoder(t)) != NULL) {
+        return codec;
+    }
+#endif
+#if defined(SK_BUILD_FOR_WIN)
+    if ((codec = SkCreateImageEncoder_WIC(t)) != NULL) {
+        return codec;
+    }
+#elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
+    if ((codec = SkCreateImageEncoder_CG(t)) != NULL) {
+        return codec;
     }
+#endif
     return NULL;
 }