Mojo C++ bindings: switch components/filesystem mojom target to use STL types.

components/filesystem/file_impl.h

Index: components/filesystem/file_impl.h
diff --git a/components/filesystem/file_impl.h b/components/filesystem/file_impl.h
index 8ad9193777bbb4ba4d72f1dd5dfb2b2a12aaa2ec..fdcb5c3d54e152cf5dd71a4a00a8ade55e937e7c 100644
--- a/components/filesystem/file_impl.h
+++ b/components/filesystem/file_impl.h
@@ -50,7 +50,7 @@ class FileImpl : public mojom::File {
             int64_t offset,
             mojom::Whence whence,
             const ReadCallback& callback) override;
-  void Write(mojo::Array<uint8_t> bytes_to_write,
+  void Write(const std::vector<uint8_t>& bytes_to_write,
              int64_t offset,
              mojom::Whence whence,
              const WriteCallback& callback) override;