Add lots of GN targets

chrome/browser/safe_browsing/BUILD.gn

Index: chrome/browser/safe_browsing/BUILD.gn
diff --git a/chrome/browser/safe_browsing/BUILD.gn b/chrome/browser/safe_browsing/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..b6c750ea29278eeaacba3cc8febfec82b44f17d4
--- /dev/null
+++ b/chrome/browser/safe_browsing/BUILD.gn
@@ -0,0 +1,15 @@
+# Copyright 2014 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.
+
+import("//third_party/protobuf/proto_library.gni")
+
+# GYP version: chrome/chrome_browser.gypi:safe_browsing_chunk_proto
+proto_library("chunk_proto") {
+  sources = [ "chunk.proto" ]
+}
+
+# GYP version: chrome/chrome_browser.gypi:safe_browsing_report_proto
+proto_library("report_proto") {
+  sources = [ "report.proto" ]
+}