Decompose //extensions/browser/BUILD.gn

extensions/browser/api/socket/BUILD.gn

Index: extensions/browser/api/socket/BUILD.gn
diff --git a/extensions/browser/api/socket/BUILD.gn b/extensions/browser/api/socket/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..be3e457de0e8c4f620ceed9c469844f8cea24baa
--- /dev/null
+++ b/extensions/browser/api/socket/BUILD.gn
@@ -0,0 +1,31 @@
+# Copyright 2016 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.
+
+source_set("socket") {
+  sources = [
+    "socket.cc",
+    "socket.h",
+    "socket_api.cc",
+    "socket_api.h",
+    "tcp_socket.cc",
+    "tcp_socket.h",
+    "tls_socket.cc",
+    "tls_socket.h",
+    "udp_socket.cc",
+    "udp_socket.h",
+  ]
+
+  if (is_chromeos) {
+    sources += [
+      "app_firewall_hole_manager.cc",
+      "app_firewall_hole_manager.h",
+    ]
+  }
+
+  deps = [
+    "//content/public/common",
+    "//extensions/common/api",
+    "//skia",
+  ]
+}