Reland of Delay Input.dispatchKeyEvent response until after key event ack.

content/browser/devtools/protocol/devtools_protocol_handler_generator.py

 #!/usr/bin/env python
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import sys
 import string
 import json
 
 blink_protocol_path = sys.argv[1]
@@ skipping 628 matching lines @@
 
 setters = []
 fields = []
 
 includes = []
 fields_init = []
 
 browser_domains_list = ["Input"]
 browser_commands_list = []
 async_commands_list = [
+    "Input.dispatchKeyEvent",
+    "Input.dispatchMouseEvent",
     "Input.synthesizePinchGesture",
     "Input.synthesizeScrollGesture",
     "Input.synthesizeTapGesture"]
 
 for json_domain in all_domains:
   domain_map = {}
   domain_map["Domain"] = json_domain["domain"]
   domain_map["domain"] = Uncamelcase(json_domain["domain"])
 
   initializations = []
@@ skipping 151 matching lines @@
 output_h_file.close()
 
 output_cc_file.write(template_cc.substitute({},
     major = blink_protocol["version"]["major"],
     minor = blink_protocol["version"]["minor"],
     includes = "".join(sorted(includes)),
     fields_init = ",\n      ".join(fields_init),
     methods = "\n".join(handler_method_impls),
     types = "\n".join(type_impls)))
 output_cc_file.close()