Blink-in-JS: Support partial interfaces in private scripts

Source/build/scripts/make_private_script_source.py

Index: Source/build/scripts/make_private_script_source.py
diff --git a/Source/build/scripts/make_private_script_source.py b/Source/build/scripts/make_private_script_source.py
index 2537f7a85e73cfd647d016754c2c381b17b1c383..559f494c7b1a922390d1633df712c253c1679186 100644
--- a/Source/build/scripts/make_private_script_source.py
+++ b/Source/build/scripts/make_private_script_source.py
@@ -10,9 +10,22 @@ python make_private_script_source.py DESTINATION_FILE SOURCE_FILES
 """
 
 import os
+import re
 import sys
 
 
+def extract_partial_interface_name(filename):
+    basename, ext = os.path.splitext(filename)
+    assert ext == '.js'
+    if os.path.basename(basename) == 'PrivateScriptRunner':
+        return None
+    idl_filename = basename + '.idl'
+    with open(idl_filename) as f:
+        contents = f.read()
+        match = re.search(r'partial\s+interface\s+(\w+)\s*{', contents)
+        return match and match.group(1)
+
+
 def main():
     output_filename = sys.argv[1]
     input_filenames = sys.argv[2:]
@@ -24,11 +37,12 @@ def main():
         with open(input_filename) as input_file:
             input_text = input_file.read()
             hex_values = ['0x{0:02x}'.format(ord(char)) for char in input_text]
-            contents.append('const unsigned char kSourceOf%s[] = {\n    %s\n};\n' % (
+            contents.append('const unsigned char kSourceOf%s[] = {\n    %s\n};\n\n' % (
                 class_name, ', '.join(hex_values)))
     contents.append('struct %s {' % source_name)
     contents.append("""
-    const char* name;
+    const char* className;
+    const char* dependencyClassName;
     const unsigned char* source;
     size_t size;
 };
@@ -37,7 +51,8 @@ def main():
     contents.append('struct %s k%s[] = {\n' % (source_name, source_name))
     for input_filename in input_filenames:
         class_name, ext = os.path.splitext(os.path.basename(input_filename))
-        contents.append('    { "%s", kSourceOf%s, sizeof(kSourceOf%s) },\n' % (class_name, class_name, class_name))
+        dependency_class_name = extract_partial_interface_name(input_filename) or class_name
+        contents.append('    { "%s", "%s", kSourceOf%s, sizeof(kSourceOf%s) },\n' % (class_name, dependency_class_name, class_name, class_name))
     contents.append('};\n')
 
     with open(output_filename, 'w') as output_file: