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

tools/gn/ninja_copy_target_writer_unittest.cc

Index: tools/gn/ninja_copy_target_writer_unittest.cc
diff --git a/tools/gn/ninja_copy_target_writer_unittest.cc b/tools/gn/ninja_copy_target_writer_unittest.cc
index e6ec2225dff2838527bdd65e5881a7dafb8805d4..f743cf4be02f4848f88f0ede8fff3ec026d8e8fc 100644
--- a/tools/gn/ninja_copy_target_writer_unittest.cc
+++ b/tools/gn/ninja_copy_target_writer_unittest.cc
@@ -29,7 +29,7 @@ TEST(NinjaCopyTargetWriter, Run) {
   ASSERT_TRUE(target.OnResolved(&err));
 
   std::ostringstream out;
-  NinjaCopyTargetWriter writer(&target, out);
+  NinjaCopyTargetWriter writer(&target, out, Toolchain::TYPE_COPY);
   writer.Run();
 
   const char expected_linux[] =
@@ -59,7 +59,7 @@ TEST(NinjaCopyTargetWriter, ToolchainDeps) {
   ASSERT_TRUE(target.OnResolved(&err));
 
   std::ostringstream out;
-  NinjaCopyTargetWriter writer(&target, out);
+  NinjaCopyTargetWriter writer(&target, out, Toolchain::TYPE_COPY);
   writer.Run();
 
   const char expected_linux[] =
@@ -86,7 +86,7 @@ TEST(NinjaCopyTargetWriter, OrderOnlyDeps) {
   ASSERT_TRUE(target.OnResolved(&err));
 
   std::ostringstream out;
-  NinjaCopyTargetWriter writer(&target, out);
+  NinjaCopyTargetWriter writer(&target, out, Toolchain::TYPE_COPY);
   writer.Run();
 
   const char expected_linux[] =
@@ -98,3 +98,34 @@ TEST(NinjaCopyTargetWriter, OrderOnlyDeps) {
   std::string out_str = out.str();
   EXPECT_EQ(expected_linux, out_str);
 }
+
+// Test that the correct tool is used for copy_bundle_data.
+TEST(NinjaCopyTargetWriter, RunForCopyBundleData) {
+  TestWithScope setup;
+  Err err;
+
+  setup.build_settings()->SetBuildDir(SourceDir("//out/Debug/"));
+  Target target(setup.settings(), Label(SourceDir("//foo/"), "bar"));
+  target.set_output_type(Target::COPY_FILES);
+
+  target.sources().push_back(SourceFile("//foo/input1.txt"));
+  target.sources().push_back(SourceFile("//foo/input2.txt"));
+
+  target.action_values().outputs() =
+      SubstitutionList::MakeForTest("//out/Debug/{{source_name_part}}.out");
+
+  target.SetToolchain(setup.toolchain());
+  ASSERT_TRUE(target.OnResolved(&err));
+
+  std::ostringstream out;
+  NinjaCopyTargetWriter writer(&target, out, Toolchain::TYPE_COPY_BUNDLE_DATA);
+  writer.Run();
+
+  const char expected_linux[] =
+      "build input1.out: copy_bundle_data ../../foo/input1.txt\n"
+      "build input2.out: copy_bundle_data ../../foo/input2.txt\n"
+      "\n"
+      "build obj/foo/bar.stamp: stamp input1.out input2.out\n";
+  std::string out_str = out.str();
+  EXPECT_EQ(expected_linux, out_str);
+}