[bindings] partial interfaces should not violate componentization

Source/bindings/scripts/scripts.gni

Index: Source/bindings/scripts/scripts.gni
diff --git a/Source/bindings/scripts/scripts.gni b/Source/bindings/scripts/scripts.gni
index 1058126d4b7420c5a6d20b1a46c9a9f696906ecd..1969ef20ef8bf9f1d40d40fb8dd58fb2702b280a 100644
--- a/Source/bindings/scripts/scripts.gni
+++ b/Source/bindings/scripts/scripts.gni
@@ -108,8 +108,11 @@ template("generate_event_interfaces") {
 # Parameters:
 #   sources = list of IDL files to compile
 #   output_dir = string containing the directory to put the output files.
+#   output_name_suffix = a suffix after the basename of the output file names.
+#   target_component = component to generate code for.
 template("idl_compiler") {
   output_dir = invoker.output_dir
+  output_name_suffix = invoker.output_name_suffix
 
   action_foreach(target_name) {
     # TODO(brettw) GYP adds a "-S before the script name to skip "import site" to
@@ -142,8 +145,8 @@ template("idl_compiler") {
 
     sources = invoker.sources
     outputs = [
-      "$output_dir/V8{{source_name_part}}.cpp",
-      "$output_dir/V8{{source_name_part}}.h",
+      "$output_dir/V8{{source_name_part}}${output_name_suffix}.cpp",
+      "$output_dir/V8{{source_name_part}}${output_name_suffix}.h",
     ]
 
     args = [
@@ -155,6 +158,8 @@ template("idl_compiler") {
       rebase_path("$bindings_modules_output_dir/InterfacesInfoModules.pickle",
                   root_build_dir),
       "--write-file-only-if-changed=1",  # Always true for Ninja.
+      "--target-component",
+      invoker.target_component,
       "{{source}}",
     ]