Add support for Mac/iOS application bundles to GN tool.

tools/gn/config_values_generator.cc

Index: tools/gn/config_values_generator.cc
diff --git a/tools/gn/config_values_generator.cc b/tools/gn/config_values_generator.cc
index 3cc8235face1472d3c858b8f82c736e5c45d12f8..db2ed1e77ca13473f502f133c9bcc1963bfb460d 100644
--- a/tools/gn/config_values_generator.cc
+++ b/tools/gn/config_values_generator.cc
@@ -44,6 +44,23 @@ void GetDirList(
   (config_values->*accessor)().swap(result);
 }
 
+void GetSrcList(
+    Scope* scope,
+    const char* var_name,
+    ConfigValues* config_values,
+    const SourceDir input_dir,
+    std::vector<SourceFile>& (ConfigValues::* accessor)(),
+    Err* err) {
+  const Value* value = scope->GetValue(var_name, true);
+  if (!value)
+    return;  // No value, empty input and succeed.
+
+  std::vector<SourceFile> result;
+  ExtractListOfRelativeFiles(scope->settings()->build_settings(),
+                             *value, input_dir, &result, err);
+  (config_values->*accessor)().swap(result);
+}
+
 }  // namespace
 
 ConfigValuesGenerator::ConfigValuesGenerator(
@@ -66,6 +83,9 @@ void ConfigValuesGenerator::Run() {
 #define FILL_DIR_CONFIG_VALUE(name) \
     GetDirList(scope_, #name, config_values_, input_dir_, \
                &ConfigValues::name, err_);
+#define FILL_SRC_CONFIG_VALUE(name) \
+    GetSrcList(scope_, #name, config_values_, input_dir_, \
+               &ConfigValues::name, err_);
 
   FILL_STRING_CONFIG_VALUE(asmflags)
   FILL_STRING_CONFIG_VALUE(cflags)
@@ -77,9 +97,11 @@ void ConfigValuesGenerator::Run() {
   FILL_DIR_CONFIG_VALUE(   include_dirs)
   FILL_STRING_CONFIG_VALUE(ldflags)
   FILL_DIR_CONFIG_VALUE(   lib_dirs)
+  FILL_SRC_CONFIG_VALUE(   bundle_data)
 
 #undef FILL_STRING_CONFIG_VALUE
 #undef FILL_DIR_CONFIG_VALUE
+#undef FILL_SRC_CONFIG_VALUE
 
   // Libs
   const Value* libs_value = scope_->GetValue("libs", true);