Add GN files for bspatch.

third_party/bspatch/BUILD.gn

Index: third_party/bspatch/BUILD.gn
diff --git a/third_party/bspatch/BUILD.gn b/third_party/bspatch/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..c0eb4ddbbc347fa6a0dd27b9b6514761e5c49086
--- /dev/null
+++ b/third_party/bspatch/BUILD.gn
@@ -0,0 +1,17 @@
+# Copyright (c) 2015 The Chromium Authors. All rights reserved.

[cpu_(ooo_6.6-7.5), 2015/01/23 23:59:47]

I believe the new files don't have (c).

[Slava Chigrin, 2015/01/24 16:20:34]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source_set("bspatch") {

[Slava Chigrin, 2015/01/23 20:35:30]

Users of this target use absolute include paths, thats why I did not move block

direct_dependent_settings': {
  'include_dirs': [
     '.',
   ],
}

here. See e.g.
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/installer/s...

+  sources = [
+    "mbspatch.cc",
+    "mbspatch.h",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  deps = [
+    "//third_party/lzma_sdk",
+  ]
+}