Introduce dartanalyze into our build.

mojo/public/dart/rules.gni

 # Copyright 2015 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.
 
 # Rules to generate python packaged applications for Dart
 
 import("../mojo_sdk.gni")
 
 template("dart_package") {
   action(target_name) {
@@ skipping 36 matching lines @@
   }
 }
 
 # Use this template to generate a .mojo dart application. One of the source
 # files should be named main.dart and contain a main function as the
 # entry point. Dependencies of dart_packaged_application targets should be
 # either mojom targets (and specified using the mojom_deps variable) or
 # dart_package targets.
 template("dart_packaged_application") {
   package_name = "${target_name}_package"
+  package_analyze_sources = "${target_name}_analyze"
   package_output = "$target_out_dir/$package_name.dartzip"
 
   if (defined(invoker.output_name)) {
     mojo_output = "$root_out_dir/" + invoker.output_name + ".mojo"
   } else {
     mojo_output = "$root_out_dir/" + target_name + ".mojo"
   }
 
+  action_foreach(package_analyze_sources) {
+    sources = invoker.sources
+
+    script = rebase_path("mojo/public/tools/dart_analyze.py", ".", mojo_root)
+
+    args = [
+      rebase_path(root_gen_dir),
+      rebase_path("$target_gen_dir/{{source_name_part}}.stamp"),
+      "{{source}}",
+      "--no-hints",
+      "--url-mapping=dart:mojo_application,/" +
+          rebase_path("mojo/public/dart/application.dart", "/", mojo_root),
+      "--url-mapping=dart:mojo_bindings,/" +
+          rebase_path("mojo/public/dart/bindings.dart", "/", mojo_root),
+      "--url-mapping=dart:mojo_builtin,/" +
+          rebase_path("mojo/dart/embedder/builtin.dart", "/", mojo_root),
+      "--url-mapping=dart:mojo_core,/" +
+          rebase_path("mojo/public/dart/core.dart", "/", mojo_root),
+    ]
+
+    deps = []
+    if (defined(invoker.deps)) {
+      deps += invoker.deps
+    }
+
+    outputs = [
+      "$target_gen_dir/{{source_name_part}}.stamp",
+    ]
+  }
+
   dart_package(package_name) {
     sources = invoker.sources
     if (defined(invoker.deps)) {
       deps = invoker.deps
     }
     if (defined(invoker.mojom_deps)) {
       mojom_deps = invoker.mojom_deps
     }
     if (defined(invoker.datadeps)) {
       datadeps = invoker.datadeps
     }
   }
 
   action(target_name) {
     script = rebase_path("mojo/public/tools/prepend.py", ".", mojo_root)
 
     input = package_output
     inputs = [
       input,
     ]
 
     output = mojo_output
     outputs = [
       output,
     ]
 
     deps = [
+      ":$package_analyze_sources",
       ":$package_name",
     ]
     if (defined(invoker.deps)) {
       deps += invoker.deps
     }
     if (defined(invoker.mojom_deps)) {
       deps += invoker.mojom_deps
     }
     if (defined(invoker.datadeps)) {
       datadeps = invoker.datadeps
     }
 
     line = "#!mojo mojo:dart_content_handler"
     if (defined(invoker.strict) && invoker.strict == true) {
       line = "#!mojo mojo:dart_content_handler?strict=true"
     }
 
     rebase_input = rebase_path(input, root_build_dir)
     rebase_output = rebase_path(output, root_build_dir)
     args = [
       "--input=$rebase_input",
       "--output=$rebase_output",
       "--line=$line",
     ]
   }
 }