Error checking / reporting API

Review URL: https://codereview.chromium.org/13699004

git-svn-id: http://skia.googlecode.com/svn/trunk@8566 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/core.gypi b/gyp/core.gypi
index 3fc5263..ac66eed 100644
--- a/gyp/core.gypi
+++ b/gyp/core.gypi
@@ -76,6 +76,8 @@
         '<(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',
@@ -223,6 +225,7 @@
         '<(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',