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/tests.gyp b/gyp/tests.gyp
index cd9e1b8..4f9fefe 100644
--- a/gyp/tests.gyp
+++ b/gyp/tests.gyp
@@ -44,6 +44,7 @@
         '../tests/DrawPathTest.cpp',
         '../tests/DrawTextTest.cpp',
         '../tests/EmptyPathTest.cpp',
+        '../tests/ErrorTest.cpp',
         '../tests/FillPathTest.cpp',
         '../tests/FlatDataTest.cpp',
         '../tests/FlateTest.cpp',