GN threading refactor

tools/gn/copy_target_generator.cc

Index: tools/gn/copy_target_generator.cc
diff --git a/tools/gn/copy_target_generator.cc b/tools/gn/copy_target_generator.cc
index f02d4a7f750e40c49626747282acb7c1db12273e..b1b907642880c9697ec260e77ca8c2d32df6bfdd 100644
--- a/tools/gn/copy_target_generator.cc
+++ b/tools/gn/copy_target_generator.cc
@@ -6,14 +6,15 @@
 
 #include "tools/gn/build_settings.h"
 #include "tools/gn/filesystem_utils.h"
+#include "tools/gn/parse_tree.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/value.h"
 
 CopyTargetGenerator::CopyTargetGenerator(Target* target,
                                          Scope* scope,
-                                         const Token& function_token,
+                                         const FunctionCallNode* function_call,
                                          Err* err)
-    : TargetGenerator(target, scope, function_token, err) {
+    : TargetGenerator(target, scope, function_call, err) {
 }
 
 CopyTargetGenerator::~CopyTargetGenerator() {
@@ -33,18 +34,16 @@ void CopyTargetGenerator::DoRun() {
     return;
 
   if (target_->sources().empty()) {
-    *err_ = Err(function_token_, "Empty sources for copy command.",
+    *err_ = Err(function_call_, "Empty sources for copy command.",
         "You have to specify at least one file to copy in the \"sources\".");
     return;
   }
   if (target_->script_values().outputs().size() != 1) {
-    *err_ = Err(function_token_, "Copy command must have exactly one output.",
+    *err_ = Err(function_call_, "Copy command must have exactly one output.",
         "You must specify exactly one value in the \"outputs\" array for the "
         "destination of the copy\n(see \"gn help copy\"). If there are "
         "multiple sources to copy, use source expansion\n(see \"gn help "
         "source_expansion\").");
     return;
   }
-
-  SetToolchainDependency();
 }