Add SkImageGenerator Interface

gyp/core.gypi

 # Include this gypi to include all 'core' files
 # The parent gyp/gypi file must define
 #       'skia_src_path'     e.g. skia/trunk/src
 #       'skia_include_path' e.g. skia/trunk/include
 #
 # The skia build defines these in common_variables.gypi
 #
 {
     'sources': [
         '<(skia_src_path)/core/ARGB32_Clamp_Bilinear_BitmapShader.h',
@@ skipping 296 matching lines @@
         '<(skia_include_path)/core/SkWeakRefCnt.h',
         '<(skia_include_path)/core/SkWriter32.h',
         '<(skia_include_path)/core/SkXfermode.h',
 
         # Lazy decoding:
         '<(skia_include_path)/lazy/SkBitmapFactory.h',
         '<(skia_include_path)/lazy/SkImageCache.h',
         '<(skia_include_path)/lazy/SkLruImageCache.h',
         '<(skia_include_path)/lazy/SkPurgeableImageCache.h',
 
+        '<(skia_src_path)/lazy/SkDiscardablePixelRef.cpp',
         '<(skia_src_path)/lazy/SkBitmapFactory.cpp',
         '<(skia_src_path)/lazy/SkLazyPixelRef.h',
         '<(skia_src_path)/lazy/SkLazyPixelRef.cpp',
         '<(skia_src_path)/lazy/SkLruImageCache.cpp',
         '<(skia_src_path)/lazy/SkPurgeableMemoryBlock.h',
         '<(skia_src_path)/lazy/SkPurgeableMemoryBlock_common.cpp',
         '<(skia_src_path)/lazy/SkPurgeableImageCache.cpp',
 
         '<(skia_src_path)/lazy/SkCachingPixelRef.cpp',
         '<(skia_src_path)/lazy/SkCachingPixelRef.h',
@@ skipping 56 matching lines @@
         '<(skia_src_path)/pathops/SkQuarticRoot.h',
         '<(skia_src_path)/pathops/SkReduceOrder.h',
     ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: