Mojo: add native type mapping for base::FilePath

mojo/common/common_custom_types_unittest.cc

Index: mojo/common/common_custom_types_unittest.cc
diff --git a/mojo/common/common_custom_types_unittest.cc b/mojo/common/common_custom_types_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2223c26c2d0956d45ff268bfad9029b87be61397
--- /dev/null
+++ b/mojo/common/common_custom_types_unittest.cc
@@ -0,0 +1,52 @@
+// Copyright 2016 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.
+
+#include "base/files/file_path.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "mojo/common/common_custom_types.mojom.h"
+#include "mojo/common/test_common_custom_types.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace mojo {
+namespace common {
+namespace test {
+
+class TestFilePathImpl : public TestFilePath {
+ public:
+  explicit TestFilePathImpl(TestFilePathRequest request)
+      : binding_(this, std::move(request)) {}
+
+  // TestFilePath implementation:
+  void BounceFilePath(const base::FilePath& in,
+                      const BounceFilePathCallback& callback) override {
+    callback.Run(in);
+  }
+
+ private:
+  mojo::Binding<TestFilePath> binding_;
+};
+
+TEST(CommonCustomTypesTest, FilePath) {
+  base::MessageLoop message_loop;
+  base::RunLoop run_loop;
+
+  TestFilePathPtr ptr;
+  TestFilePathImpl impl(GetProxy(&ptr));
+
+  base::FilePath dir(FILE_PATH_LITERAL("hello"));
+  base::FilePath file = dir.Append(FILE_PATH_LITERAL("world"));
+
+  ptr->BounceFilePath(file, [&run_loop, &file](const base::FilePath& out) {
+    EXPECT_EQ(file, out);
+    run_loop.Quit();
+  });
+
+  run_loop.Run();
+}
+
+}  // namespace test
+}  // namespace common
+}  // namespace mojo