GN: guard tools (except fiddle) by skia_enable_tools.

include/core/SkImageEncoder.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImageEncoder_DEFINED
 #define SkImageEncoder_DEFINED
 
@@ skipping 73 matching lines @@
      * range 0-100).
      *
      * This must be overridden by each SkImageEncoder implementation.
      */
     virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) = 0;
 };
 
 // This macro declares a global (i.e., non-class owned) creation entry point
 // for each encoder (e.g., CreateJPEGImageEncoder)
 #define DECLARE_ENCODER_CREATOR(codec)          \
-    SkImageEncoder *Create ## codec ();
+    SK_API SkImageEncoder *Create ## codec ();
 
 // This macro defines the global creation entry point for each encoder. Each
 // encoder implementation that registers with the encoder factory must call it.
 #define DEFINE_ENCODER_CREATOR(codec) \
     SkImageEncoder* Create##codec() { return new Sk##codec; }
 
 // All the encoders known by Skia. Note that, depending on the compiler settings,
 // not all of these will be available
 DECLARE_ENCODER_CREATOR(JPEGImageEncoder);
 DECLARE_ENCODER_CREATOR(PNGImageEncoder);
 DECLARE_ENCODER_CREATOR(KTXImageEncoder);
 DECLARE_ENCODER_CREATOR(WEBPImageEncoder);
 
 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
 SkImageEncoder* CreateImageEncoder_CG(SkImageEncoder::Type type);
 #endif
 
 #if defined(SK_BUILD_FOR_WIN)
 SkImageEncoder* CreateImageEncoder_WIC(SkImageEncoder::Type type);
 #endif
 
 // Typedef to make registering encoder callback easier
 // This has to be defined outside SkImageEncoder. :(
 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_EncodeReg;
 #endif