Squashed 'third_party/flatbuffers/' content from commit acc9990ab

Change-Id: I48550d40d78fea996ebe74e9723a5d1f910de491
git-subtree-dir: third_party/flatbuffers
git-subtree-split: acc9990abd2206491480291b0f85f925110102ea
diff --git a/rust/flatbuffers/src/lib.rs b/rust/flatbuffers/src/lib.rs
new file mode 100644
index 0000000..ef54132
--- /dev/null
+++ b/rust/flatbuffers/src/lib.rs
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2018 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//! # FlatBuffers
+//!
+//! A library for memory-efficient serialization of data.
+//!
+//! This crate provides runtime support for the FlatBuffers format in the Rust programming language.
+//! To use this crate, first generate code with the `flatc` compiler, as described here: https://google.github.io/flatbuffers/
+//! Then, include that code into your project.
+//! Finally, add this crate to your `Cargo.toml`.
+//!
+//! At this time, Rust support is experimental, and APIs may change between minor versions.
+//!
+//! At this time, to generate Rust code, you will need the latest `master` version of `flatc`, available from here: https://github.com/google/flatbuffers
+//! (On OSX, you can install FlatBuffers from `HEAD` with the Homebrew package manager.)
+
+mod builder;
+mod endian_scalar;
+mod follow;
+mod primitives;
+mod push;
+mod table;
+mod vector;
+mod vtable;
+mod vtable_writer;
+
+pub use builder::FlatBufferBuilder;
+pub use endian_scalar::{
+    byte_swap_f32, byte_swap_f64, emplace_scalar, read_scalar, read_scalar_at, EndianScalar,
+};
+pub use follow::{Follow, FollowStart};
+pub use primitives::*;
+pub use push::Push;
+pub use table::{buffer_has_identifier, get_root, get_size_prefixed_root, Table};
+pub use vector::{follow_cast_ref, SafeSliceAccess, Vector};
+pub use vtable::field_index_to_field_offset;
+
+// TODO(rw): Unify `create_vector` and `create_vector_direct` by using
+//           `Into<Vector<...>>`.
+// TODO(rw): Split fill ops in builder into fill_small, fill_big like in C++.