[inspector] use own version of third_party/inspector_protocol

third_party/WebKit/Source/core/inspector/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("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/core/core.gni")
-import(
-    "//third_party/WebKit/Source/platform/inspector_protocol/inspector_protocol.gni")
+import("//third_party/inspector_protocol/inspector_protocol.gni")
 import("//v8/gni/v8.gni")
 
+_inspector_protocol_dir = "//third_party/inspector_protocol"
+
 blink_core_sources("inspector") {
   sources = [
     "ConsoleMessage.cpp",
     "ConsoleMessage.h",
     "ConsoleMessageStorage.cpp",
     "ConsoleMessageStorage.h",
     "ConsoleTypes.h",
     "DOMEditor.cpp",
     "DOMEditor.h",
     "DOMPatchSupport.cpp",
@@ skipping 95 matching lines @@
   args = [
     rebase_path("InspectorInstrumentation.idl", root_build_dir),
     "--output_dir",
     rebase_path(blink_core_output_dir, root_build_dir),
   ]
 }
 
 # inspector protocol -----------------------------------------------------------
 
 inspector_protocol_generate("protocol_sources") {
+  inspector_protocol_dir = _inspector_protocol_dir
   out_dir = blink_core_output_dir
 
   config_file = "inspector_protocol_config.json"
 
   inputs = [
     "browser_protocol.json",
     v8_inspector_js_protocol,
     "inspector_protocol_config.json",
   ]
 
@@ skipping 84 matching lines @@
     "//skia",
     "//third_party/WebKit/Source/bindings/core/v8:bindings_core_v8_generated",
     "//third_party/WebKit/Source/core:all_generators",
     "//third_party/WebKit/Source/platform:make_platform_generated",
     "//third_party/WebKit/Source/wtf",
     "//v8",
   ]
 }
 
 action("protocol_compatibility_check") {
-  script = "../../platform/inspector_protocol/CheckProtocolCompatibility.py"
+  script = _inspector_protocol_dir + "/CheckProtocolCompatibility.py"
 
   inputs = [
     "browser_protocol.json",
     v8_inspector_js_protocol,
   ]
   _stamp = "$blink_core_output_dir/inspector/browser_protocol.stamp"
   outputs = [
     _stamp,
   ]
 
   args = [
     "--stamp",
     rebase_path(_stamp, root_build_dir),
     rebase_path("browser_protocol.json", root_build_dir),
     rebase_path(v8_inspector_js_protocol, root_build_dir),
   ]
 }
 
 action("protocol_version") {
   deps = [
     ":protocol_compatibility_check",
   ]
-  script = "../../platform/inspector_protocol/ConcatenateProtocols.py"
+  script = _inspector_protocol_dir + "/ConcatenateProtocols.py"
 
   inputs = [
     "browser_protocol.json",
     v8_inspector_js_protocol,
   ]
   output_file = "$blink_core_output_dir/inspector/protocol.json"
   outputs = [
     output_file,
   ]
 
   args = [
     rebase_path("browser_protocol.json", root_build_dir),
     rebase_path(v8_inspector_js_protocol, root_build_dir),
     rebase_path(output_file, root_build_dir),
   ]
 }