add unittest for sk_memset16 and sk_memset32



git-svn-id: http://skia.googlecode.com/svn/trunk@2985 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/tests.gyp b/gyp/tests.gyp
index 187eea5..27a34a0 100644
--- a/gyp/tests.gyp
+++ b/gyp/tests.gyp
@@ -39,6 +39,7 @@
         '../tests/MathTest.cpp',
         '../tests/MatrixTest.cpp',
         '../tests/Matrix44Test.cpp',
+        '../tests/MemsetTest.cpp',
         '../tests/MetaDataTest.cpp',
         '../tests/PackBitsTest.cpp',
         '../tests/PaintTest.cpp',