DevTools: split protocol.json into files per domain.

content/browser/devtools/BUILD.gn

 # 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("//tools/grit/grit_rule.gni")
 
 # In GYP: devtools_resources target.
 group("resources") {
   public_deps = [
     ":devtools_resources",
@@ skipping 18 matching lines @@
       [ "SHARED_INTERMEDIATE_DIR=" + rebase_path(root_gen_dir, root_build_dir) ]
 
   deps = [
     # This is the action that generates out .grd input file.
     "//third_party/WebKit/public:blink_generate_devtools_grd",
   ]
 }
 
 action("gen_devtools_protocol_handler") {
   visibility = [ "//content/browser" ]
-
+  deps = [
+    "//third_party/WebKit/Source/core/inspector:protocol_version",
+  ]
   script = "//content/browser/devtools/protocol/" +
            "devtools_protocol_handler_generator.py"
 
-  blink_protocol = "//third_party/WebKit/Source/devtools/protocol.json"
+  blink_protocol = "$root_gen_dir/blink/core/inspector/protocol.json"
   browser_protocol = "browser_protocol.json"
   inputs = [
     blink_protocol,
     browser_protocol,
   ]
 
   outputs = [
     "$target_gen_dir/protocol/devtools_protocol_dispatcher.cc",
     "$target_gen_dir/protocol/devtools_protocol_dispatcher.h",
   ]
 
   args =
       rebase_path(inputs, root_build_dir) + rebase_path(outputs, root_build_dir)
 }