Don't add implicit deps to copy commands in GN.

tools/gn/ninja_binary_target_writer_unittest.cc

Index: tools/gn/ninja_binary_target_writer_unittest.cc
diff --git a/tools/gn/ninja_binary_target_writer_unittest.cc b/tools/gn/ninja_binary_target_writer_unittest.cc
index bcaeae720fe22011df63257d73e9afd68f1f9cde..be2a5b53b7de36637f018b6e4e5099b40963d16e 100644
--- a/tools/gn/ninja_binary_target_writer_unittest.cc
+++ b/tools/gn/ninja_binary_target_writer_unittest.cc
@@ -39,6 +39,9 @@ TEST(NinjaBinaryTargetWriter, SourceSet) {
         "cflags_cc =\n"
         "cflags_objc =\n"
         "cflags_objcc =\n"
+        "target_name = bar\n"
+        "target_out_dir = obj/foo\n"
+        "root_out_dir = \n"
         "\n"
         "build obj/foo/bar.input1.obj: cxx ../../foo/input1.cc\n"
         "build obj/foo/bar.input2.obj: cxx ../../foo/input2.cc\n"
@@ -73,6 +76,9 @@ TEST(NinjaBinaryTargetWriter, SourceSet) {
         "cflags_cc =\n"
         "cflags_objc =\n"
         "cflags_objcc =\n"
+        "target_name = shlib\n"
+        "target_out_dir = obj/foo\n"
+        "root_out_dir = \n"
         "\n"
         "\n"
         "manifests = obj/foo/shlib.intermediate.manifest\n"
@@ -116,6 +122,9 @@ TEST(NinjaBinaryTargetWriter, SourceSet) {
         "cflags_cc =\n"
         "cflags_objc =\n"
         "cflags_objcc =\n"
+        "target_name = stlib\n"
+        "target_out_dir = obj/foo\n"
+        "root_out_dir = \n"
         "\n"
         "\n"
         "manifests = obj/foo/stlib.intermediate.manifest\n"
@@ -159,6 +168,9 @@ TEST(NinjaBinaryTargetWriter, ProductExtension) {
       "cflags_cc =\n"
       "cflags_objc =\n"
       "cflags_objcc =\n"
+      "target_name = shlib\n"
+      "target_out_dir = obj/foo\n"
+      "root_out_dir = \n"
       "\n"
       "build obj/foo/shlib.input1.o: cxx ../../foo/input1.cc\n"
       "build obj/foo/shlib.input2.o: cxx ../../foo/input2.cc\n"
@@ -205,6 +217,9 @@ TEST(NinjaBinaryTargetWriter, EmptyProductExtension) {
       "cflags_cc =\n"
       "cflags_objc =\n"
       "cflags_objcc =\n"
+      "target_name = shlib\n"
+      "target_out_dir = obj/foo\n"
+      "root_out_dir = \n"
       "\n"
       "build obj/foo/shlib.input1.o: cxx ../../foo/input1.cc\n"
       "build obj/foo/shlib.input2.o: cxx ../../foo/input2.cc\n"