Add Dart_Save/LoadCompilationTrace.

runtime/bin/BUILD.gn

 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import("gypi_contents.gni")
 import("../runtime_args.gni")
 import("../../build/compiled_action.gni")
 
 declare_args() {
   # Controls the kind of core snapshot linked into the standalone VM. Using a
@@ skipping 446 matching lines @@
     "builtin_nolib.cc",
     "embedded_dart_io.cc",
     "embedded_dart_io.h",
   ]
 }
 
 dart_io("standalone_dart_io") {
   extra_sources = []
 }
 
-action("generate_snapshot_bin") {
-  deps = [
-    "../bin:gen_snapshot($host_toolchain)",
-  ]
-
+compiled_action("generate_snapshot_bin") {
+  compilation_trace = "hello_world_trace.txt"
   vm_snapshot_data = "$target_gen_dir/vm_snapshot_data.bin"
   vm_snapshot_instructions = "$target_gen_dir/vm_snapshot_instructions.bin"
   isolate_snapshot_data = "$target_gen_dir/isolate_snapshot_data.bin"
   isolate_snapshot_instructions =
       "$target_gen_dir/isolate_snapshot_instructions.bin"
-  gen_snapshot_stamp_file = "$target_gen_dir/gen_snapshot.stamp"
+
+  inputs = [
+    compilation_trace,
+  ]
   outputs = [
     vm_snapshot_data,
     vm_snapshot_instructions,
     isolate_snapshot_data,
     isolate_snapshot_instructions,
-    gen_snapshot_stamp_file,
   ]
-
-  gen_snapshot_dir =
-      get_label_info("../bin:gen_snapshot($host_toolchain)", "root_out_dir")
-
-  script = rebase_path("../tools/create_snapshot_bin.py")
+  tool = ":gen_snapshot"
   args = [
-    "--executable",
-    rebase_path("$gen_snapshot_dir/gen_snapshot"),
-    "--snapshot_kind",
-    dart_core_snapshot_kind,
-    "--vm_output_bin",
-    rebase_path(vm_snapshot_data, root_build_dir),
-    "--vm_instructions_output_bin",
-    rebase_path(vm_snapshot_instructions, root_build_dir),
-    "--isolate_output_bin",
-    rebase_path(isolate_snapshot_data, root_build_dir),
-    "--isolate_instructions_output_bin",
-    rebase_path(isolate_snapshot_instructions, root_build_dir),
-    "--timestamp_file",
-    rebase_path(gen_snapshot_stamp_file, root_build_dir),
+    "--snapshot_kind=" + dart_core_snapshot_kind,
+    "--load_compilation_trace=" + rebase_path(compilation_trace),
+    "--vm_snapshot_data=" + rebase_path(vm_snapshot_data, root_build_dir),
+    "--vm_snapshot_instructions=" +
+        rebase_path(vm_snapshot_instructions, root_build_dir),
+    "--isolate_snapshot_data=" +
+        rebase_path(isolate_snapshot_data, root_build_dir),
+    "--isolate_snapshot_instructions=" +
+        rebase_path(isolate_snapshot_instructions, root_build_dir),
   ]
 }
 
 # Generates an assembly file defining a given symbol with the bytes from a
 # binary file. Places the symbol in a text section if 'executable' is true,
 # otherwise places the symbol in a read-only data section.
 template("bin_to_assembly") {
   assert(defined(invoker.deps), "Must define deps")
   assert(defined(invoker.input), "Must define input binary file")
   assert(defined(invoker.output), "Must define output assembly file")
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   ]
   if (is_linux || is_android) {
     cflags = [ "-fPIC" ]
   }
   if (is_win) {
     libs = [ "dart.lib" ]
     abs_root_out_dir = rebase_path(root_out_dir)
     ldflags = [ "/LIBPATH:$abs_root_out_dir" ]
   }
 }