first draft of error checking / reporting API

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 58 matching lines @@
         '<(skia_src_path)/core/SkDeque.cpp',
         '<(skia_src_path)/core/SkDevice.cpp',
         '<(skia_src_path)/core/SkDeviceProfile.cpp',
         '<(skia_src_path)/core/SkDither.cpp',
         '<(skia_src_path)/core/SkDraw.cpp',
         '<(skia_src_path)/core/SkDrawProcs.h',
         '<(skia_src_path)/core/SkEdgeBuilder.cpp',
         '<(skia_src_path)/core/SkEdgeClipper.cpp',
         '<(skia_src_path)/core/SkEdge.cpp',
         '<(skia_src_path)/core/SkEdge.h',
+        '<(skia_src_path)/core/SkError.cpp',
+        '<(skia_src_path)/core/SkErrorInternals.h',
         '<(skia_src_path)/core/SkFDStream.cpp',
         '<(skia_src_path)/core/SkFP.h',
         '<(skia_src_path)/core/SkFilterProc.cpp',
         '<(skia_src_path)/core/SkFilterProc.h',
         '<(skia_src_path)/core/SkFlattenable.cpp',
         '<(skia_src_path)/core/SkFlattenableBuffers.cpp',
         '<(skia_src_path)/core/SkFloat.cpp',
         '<(skia_src_path)/core/SkFloat.h',
         '<(skia_src_path)/core/SkFloatBits.cpp',
         '<(skia_src_path)/core/SkFontHost.cpp',
@@ skipping 126 matching lines @@
         '<(skia_include_path)/core/SkComposeShader.h',
         '<(skia_include_path)/core/SkData.h',
         '<(skia_include_path)/core/SkDeque.h',
         '<(skia_include_path)/core/SkDevice.h',
         '<(skia_include_path)/core/SkDeviceProperties.h',
         '<(skia_include_path)/core/SkDither.h',
         '<(skia_include_path)/core/SkDraw.h',
         '<(skia_include_path)/core/SkDrawFilter.h',
         '<(skia_include_path)/core/SkDrawLooper.h',
         '<(skia_include_path)/core/SkEndian.h',
+        '<(skia_include_path)/core/SkError.h',
         '<(skia_include_path)/core/SkFixed.h',
         '<(skia_include_path)/core/SkFlattenable.h',
         '<(skia_include_path)/core/SkFloatBits.h',
         '<(skia_include_path)/core/SkFloatingPoint.h',
         '<(skia_include_path)/core/SkFontHost.h',
         '<(skia_include_path)/core/SkGeometry.h',
         '<(skia_include_path)/core/SkGraphics.h',
         '<(skia_include_path)/core/SkImageFilter.h',
         '<(skia_include_path)/core/SkInstCnt.h',
         '<(skia_include_path)/core/SkMallocPixelRef.h',
@@ skipping 62 matching lines @@
         '<(skia_src_path)/lazy/SkPurgeableMemoryBlock_common.cpp',
         '<(skia_src_path)/lazy/SkPurgeableImageCache.cpp',
     ],
 }
 
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