DevTools: generate_protocol_externs.js should accept both protocol files as arguments

third_party/WebKit/Source/devtools/scripts/generate_protocol_externs.py

 #!/usr/bin/env python
 # Copyright (c) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 220 matching lines @@
         output_file.write("/**\n * @param {!%sAgent.Dispatcher} dispatcher\n */\n" % domain_name)
         output_file.write("Protocol.Agents.prototype.register%sDispatcher = function(dispatcher) {}\n" % domain_name)
 
 
     output_file.close()
 
 if __name__ == "__main__":
     import sys
     import os.path
     program_name = os.path.basename(__file__)
-    if len(sys.argv) < 4 or sys.argv[1] != "-o":
-        sys.stderr.write("Usage: %s -o OUTPUT_FILE INPUT_FILE\n" % program_name)
+    if len(sys.argv) < 5 or sys.argv[1] != "-o":
+        sys.stderr.write("Usage: %s -o OUTPUT_FILE INPUT_FILE_1 INPUT_FILE_2\n" % program_name)
         exit(1)
     output_path = sys.argv[2]
-    input_path = sys.argv[3]
-    generate_protocol_externs(output_path, input_path)
+    input_path_1 = sys.argv[3]
+    input_path_2 = sys.argv[4]
+    generate_protocol_externs(output_path, input_path_1, input_path_2)