DO NOT SUBMIT. Experimental Mac GN Framework support.

tools/gn/function_toolchain.cc

Index: tools/gn/function_toolchain.cc
diff --git a/tools/gn/function_toolchain.cc b/tools/gn/function_toolchain.cc
index 727be54d7362ddc85e3d4b125ef77aff8f5974c7..8a24bf3a00505457597787039465c958d9982cc8 100644
--- a/tools/gn/function_toolchain.cc
+++ b/tools/gn/function_toolchain.cc
@@ -828,10 +828,12 @@ Value RunTool(Scope* scope,
   } else if (IsLinkerTool(tool_type)) {
     subst_validator = &IsValidLinkerSubstitution;
     subst_output_validator = &IsValidLinkerOutputsSubstitution;
-  } else if (tool_type == Toolchain::TYPE_COPY ||
-             tool_type == Toolchain::TYPE_COPY_BUNDLE_DATA) {
+  } else if (tool_type == Toolchain::TYPE_COPY) {
     subst_validator = &IsValidCopySubstitution;
     subst_output_validator = &IsValidCopySubstitution;
+  } else if (tool_type == Toolchain::TYPE_COPY_BUNDLE_DATA) {
+    subst_validator = &IsValidCopyBundleDataSubstitution;
+    subst_output_validator = &IsValidCopyBundleDataSubstitution;
   } else if (tool_type == Toolchain::TYPE_COMPILE_XCASSETS) {
     subst_validator = &IsValidCompileXCassetsSubstitution;
     subst_output_validator = &IsValidCompileXCassetsSubstitution;