Make rawrtc build

Change-Id: I077e43c6aaee27307dadb97a7352c8412b735519
diff --git a/third_party/rawrtc/rawrtc-data-channel/BUILD b/third_party/rawrtc/rawrtc-data-channel/BUILD
new file mode 100644
index 0000000..096024a
--- /dev/null
+++ b/third_party/rawrtc/rawrtc-data-channel/BUILD
@@ -0,0 +1,39 @@
+load("@//tools/build_rules:select.bzl", "compiler_select")
+
+cc_library(
+    name = "rawrtcdc",
+    srcs = glob(
+        [
+            "src/**/*.c",
+            "src/**/*.h",
+        ],
+        exclude = [
+            "src/sctp_redirect_transport",
+            "src/crc32c/sse42*",
+        ],
+    ),
+    hdrs = glob(["include/**/*.h"]),
+    copts = compiler_select({
+        "clang": [
+            "-Wno-incompatible-pointer-types-discards-qualifiers",
+        ],
+        "gcc": [
+            "-Wno-discarded-qualifiers",
+            "-Wno-maybe-uninitialized",
+        ],
+    }) + [
+        "-Wno-cast-qual",
+        "-Wno-cast-align",
+        "-Wno-missing-braces",
+    ],
+    defines = [
+        "RAWRTCDC_HAVE_SCTP_REDIRECT_TRANSPORT=0",
+        "RAWRTCDC_ENABLE_SSE42_CRC32C=0",
+    ],
+    includes = ["include/"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@com_github_rawrtc_rawrtc_common//:rawrtcc",
+        "@com_github_rawrtc_usrsctp//:usrsctp_crc32",
+    ],
+)
diff --git a/third_party/rawrtc/rawrtc-data-channel/WORKSPACE b/third_party/rawrtc/rawrtc-data-channel/WORKSPACE
new file mode 100644
index 0000000..957c8b1
--- /dev/null
+++ b/third_party/rawrtc/rawrtc-data-channel/WORKSPACE
@@ -0,0 +1 @@
+workspace(name = "com_github_rawrtc_rawrtc_data_channel")
diff --git a/third_party/rawrtc/rawrtc-data-channel/include/rawrtcdc/config.h b/third_party/rawrtc/rawrtc-data-channel/include/rawrtcdc/config.h
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/third_party/rawrtc/rawrtc-data-channel/include/rawrtcdc/config.h