[instrumentation] Introduce JSON5 config files for probe generator.

third_party/WebKit/Source/core/probe/BUILD.gn

 # Copyright 2017 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/core/core.gni")
 
 blink_core_sources("probe") {
   sources = [
     "CoreProbes.cpp",
     "CoreProbes.h",
   ]
 }
 
 action("instrumentation_probes") {
-  script = "../../platform/probe/InstrumentingProbesCodeGenerator.py"
+  script = "../../build/scripts/make_instrumenting_probes.py"
 
   inputs = [
-    # Input file for the script.
     "CoreProbes.pidl",
-
-    # Templates
-    "../../platform/probe/templates/InstrumentingProbesImpl.cpp.tmpl",
-    "../../platform/probe/templates/InstrumentingProbesInl.h.tmpl",
-    "../../platform/probe/templates/ProbeSink.h.tmpl",
+    "CoreProbes.json5",
+    "../../build/scripts/templates/InstrumentingProbesImpl.cpp.tmpl",
+    "../../build/scripts/templates/InstrumentingProbesInl.h.tmpl",
+    "../../build/scripts/templates/ProbeSink.h.tmpl",
   ]
 
   outputs = [
     "$blink_core_output_dir/CoreProbesInl.h",
     "$blink_core_output_dir/InspectorOverridesInl.h",
     "$blink_core_output_dir/CoreProbesImpl.cpp",
     "$blink_core_output_dir/CoreProbeSink.h",
   ]
 
   args = [
     rebase_path(inputs[0], root_build_dir),
+    "--config",
+    rebase_path("CoreProbes.json5", root_build_dir),
     "--output_dir",
     rebase_path(blink_core_output_dir, root_build_dir),
   ]
 }
 
 # Compiles the sources generated above.
 source_set("generated") {
   sources = get_target_outputs(":instrumentation_probes")
 
   configs -= core_config_remove
   configs +=
       core_config_add + [ "//third_party/WebKit/Source/core:core_include_dirs" ]
 
   if (is_win) {
     cflags = [ "/wd4702" ]  # Unreachable code.
   }
 
   deps = [
     ":instrumentation_probes",
     "//skia",
     "//third_party/WebKit/Source/wtf",
     "//v8",
   ]
 }