Make small sub-target of gin that can be used in browser without v8 dep

gin/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("//testing/test.gni")
 import("//v8/gni/v8.gni")
 
+# This is depended upon from the browser DLL on Windows, where V8 is not used,
+# but features are enabled. This cannot depend on V8.
+source_set("gin_features") {
+  sources = [
+    "gin_export.h",
+    "gin_features.cc",
+    "public/gin_features.h",
+  ]
+
+  defines = [ "GIN_IMPLEMENTATION" ]
+
+  deps = [
+    "//base",
+  ]
+
+  assert_no_deps = [ "//v8" ]
+}
+
 component("gin") {
   sources = [
     "arguments.cc",
     "arguments.h",
     "array_buffer.cc",
     "array_buffer.h",
     "context_holder.cc",
     "converter.cc",
     "converter.h",
     "debug_impl.cc",
     "debug_impl.h",
     "dictionary.cc",
     "dictionary.h",
     "function_template.cc",
     "function_template.h",
     "gin_export.h",
-    "gin_features.cc",
     "handle.h",
     "interceptor.cc",
     "interceptor.h",
     "isolate_holder.cc",
     "modules/console.cc",
     "modules/console.h",
     "modules/file_module_provider.cc",
     "modules/file_module_provider.h",
     "modules/module_registry.cc",
     "modules/module_registry.h",
     "modules/module_registry_observer.h",
     "modules/module_runner_delegate.cc",
     "modules/module_runner_delegate.h",
     "modules/timer.cc",
     "modules/timer.h",
     "object_template_builder.cc",
     "object_template_builder.h",
     "per_context_data.cc",
     "per_context_data.h",
     "per_isolate_data.cc",
     "per_isolate_data.h",
     "public/context_holder.h",
     "public/debug.h",
     "public/gin_embedders.h",
-    "public/gin_features.h",
     "public/isolate_holder.h",
     "public/v8_idle_task_runner.h",
     "public/v8_platform.h",
     "public/wrapper_info.h",
     "run_microtasks_observer.cc",
     "run_microtasks_observer.h",
     "runner.cc",
     "runner.h",
     "shell_runner.cc",
     "shell_runner.h",
@@ skipping 16 matching lines @@
     ]
   }
 
   defines = [ "GIN_IMPLEMENTATION" ]
 
   public_deps = [
     "//base",
     "//v8",
   ]
   deps = [
+    ":gin_features",
     "//base/third_party/dynamic_annotations",
     "//crypto",
   ]
   if (v8_use_external_startup_data && is_win) {
     public_deps += [ ":gin_v8_snapshot_fingerprint" ]
     sources += [ "$target_gen_dir/v8_snapshot_fingerprint.cc" ]
     defines += [ "V8_VERIFY_EXTERNAL_STARTUP_DATA" ]
   }
 
   if (is_mac) {
@@ skipping 108 matching lines @@
     "shell/hello_world.js",
     "test/file_unittests.js",
     "test/gtest_unittests.js",
     "../OWNERS",
   ]
 
   data_deps = [
     ":gin_shell",
   ]
 }