Adding SK_API to export SkImage and SkSurface API classes

include/core/SkImage.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImage_DEFINED
 #define SkImage_DEFINED
 
@@ skipping 15 matching lines @@
 /**
  *  SkImage is an abstraction for drawing a rectagle of pixels, though the
  *  particular type of image could be actually storing its data on the GPU, or
  *  as drawing commands (picture or PDF or otherwise), ready to be played back
  *  into another canvas.
  *
  *  The content of SkImage is always immutable, though the actual storage may
  *  change, if for example that image can be re-created via encoded data or
  *  other means.
  */
-class SkImage : public SkRefCnt {
+class SK_API SkImage : public SkRefCnt {
 public:
     SK_DECLARE_INST_COUNT(SkImage)
 
     enum ColorType {
         kAlpha_8_ColorType,
         kRGB_565_ColorType,
         kRGBA_8888_ColorType,
         kBGRA_8888_ColorType,
         kPMColor_ColorType,
 
@@ skipping 44 matching lines @@
     const int       fWidth;
     const int       fHeight;
     const uint32_t  fUniqueID;
 
     static uint32_t NextUniqueID();
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif