Add download_file_types.proto with ascii->binary conversion, as a resource.

chrome/browser/resources/safe_browsing/BUILD.gn

Index: chrome/browser/resources/safe_browsing/BUILD.gn
diff --git a/chrome/browser/resources/safe_browsing/BUILD.gn b/chrome/browser/resources/safe_browsing/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..a93f4e60a95bc061bb07a892209d5473abad2579
--- /dev/null
+++ b/chrome/browser/resources/safe_browsing/BUILD.gn
@@ -0,0 +1,34 @@
+# Generate the binary proto form of "file_types" from the ascii proto.

[Lei Zhang, 2016/04/04 21:24:48]

Missing copyright header.

[Nathan Parker, 2016/04/04 22:00:53]

Done.

+action("make_file_types_protobuf") {
+  script = "gen_file_type_proto.py"
+
+  # The output goes in $target_gen_dir since that's where
+  # chrome/browser/browser_resources.grd will look for it.
+
+  input_filename = "download_file_types.asciipb"
+  output_filename = "$target_gen_dir/download_file_types.pb"
+  python_path = "$root_build_dir/pyproto/chrome/common/safe_browsing"
+
+  inputs = [
+    script,
+    input_filename,
+  ]
+
+  # This script requires the generated python proto code
+  deps = [
+    "//chrome/common/safe_browsing:proto",
+  ]
+
+  outputs = [
+    output_filename,
+  ]
+
+  args = [
+    "-i",
+    rebase_path(input_filename, root_build_dir),
+    "-o",
+    rebase_path(output_filename, root_build_dir),
+    "-p",
+    rebase_path(python_path, root_build_dir),
+  ]
+}