diff --git a/BUILD.gn b/BUILD.gn
index 11b1943..b7a5c04 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1239,6 +1239,8 @@
     sources = [
       "tools/gpu/GrContextFactory.cpp",
       "tools/gpu/GrTest.cpp",
+      "tools/gpu/MemoryCache.cpp",
+      "tools/gpu/MemoryCache.h",
       "tools/gpu/ProxyUtils.cpp",
       "tools/gpu/TestContext.cpp",
       "tools/gpu/atlastext/GLTestAtlasTextRenderer.cpp",