Add gypi_to_gn for content/utility sources list

BUG=None

Review URL: https://codereview.chromium.org/1138003007

Cr-Commit-Position: refs/heads/master@{#330393}

.gn

@@ -128,6 +128,7 @@ exec_script_whitelist = [
   "//content/public/android/BUILD.gn",
   "//content/renderer/renderer.gni",
   "//content/test/BUILD.gn",
+  "//content/utility/utility.gni",
   "//extensions/common/api/schemas.gni",
   "//extensions/extensions.gni",
   "//extensions/shell/app_shell.gni",

content/content_utility.gypi

@@ -7,22 +7,30 @@
     '../base/base.gyp:base',
     '../courgette/courgette.gyp:courgette_lib',
   ],
-  'sources': [
-    'public/utility/content_utility_client.cc',
-    'public/utility/content_utility_client.h',
-    'public/utility/utility_thread.cc',
-    'public/utility/utility_thread.h',
-    'utility/in_process_utility_thread.cc',
-    'utility/in_process_utility_thread.h',
-    'utility/utility_blink_platform_impl.cc',
-    'utility/utility_blink_platform_impl.h',
-    'utility/utility_main.cc',
-    'utility/utility_thread_impl.cc',
-    'utility/utility_thread_impl.h',
-    'utility/webthread_impl_for_utility_thread.cc',
-    'utility/webthread_impl_for_utility_thread.h',
-  ],
+  'variables': {
+    'utility_sources': [
+      'utility/in_process_utility_thread.cc',
+      'utility/in_process_utility_thread.h',
+      'utility/utility_blink_platform_impl.cc',
+      'utility/utility_blink_platform_impl.h',
+      'utility/utility_main.cc',
+      'utility/utility_thread_impl.cc',
+      'utility/utility_thread_impl.h',
+      'utility/webthread_impl_for_utility_thread.cc',
+      'utility/webthread_impl_for_utility_thread.h',
+    ],
+    'public_utility_sources': [
+      'public/utility/content_utility_client.cc',
+      'public/utility/content_utility_client.h',
+      'public/utility/utility_thread.cc',
+      'public/utility/utility_thread.h',
+    ],
+  },
   'include_dirs': [
     '..',
   ],
+  'sources': [
+    '<@(public_utility_sources)',
+    '<@(utility_sources)',
+  ],
 }

content/utility/BUILD.gn

@@ -2,22 +2,15 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//content/utility/utility.gni")
+
 source_set("utility") {
   # Only the public target should depend on this. All other targets (even
   # internal content ones) should depend on the public one.
   visibility = [ "//content/public/utility:utility_sources" ]
 
-  sources = [
-    "in_process_utility_thread.cc",
-    "in_process_utility_thread.h",
-    "utility_blink_platform_impl.cc",
-    "utility_blink_platform_impl.h",
-    "utility_main.cc",
-    "utility_thread_impl.cc",
-    "utility_thread_impl.h",
-    "webthread_impl_for_utility_thread.cc",
-    "webthread_impl_for_utility_thread.h",
-  ]
+  sources =
+      rebase_path(content_utility_gypi_values.utility_sources, ".", "//content")
 
   configs += [ "//content:content_implementation" ]
 

content/utility/utility.gni

@@ -0,0 +1,16 @@
+# 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.
+
+# This file defines the content utility gypi values. This file is read once and
+# cached, which is a performance optimization that allows us to share the
+# results of parsing the .gypi file between the public and private BUILD.gn
+# files. It also saves us from duplicating this exec_script call.
+content_utility_gypi_values =
+    exec_script("//build/gypi_to_gn.py",
+                [
+                  rebase_path("../content_utility.gypi"),
+                  "--replace=<(SHARED_INTERMEDIATE_DIR)=$root_gen_dir",
+                ],
+                "scope",
+                [ "../content_utility.gypi" ])