Decompose //extensions/browser/BUILD.gn

extensions/browser/api/web_request/BUILD.gn

Index: extensions/browser/api/web_request/BUILD.gn
diff --git a/extensions/browser/api/web_request/BUILD.gn b/extensions/browser/api/web_request/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..4566696690ef6f4fdf288726130b01c14c3e3434
--- /dev/null
+++ b/extensions/browser/api/web_request/BUILD.gn
@@ -0,0 +1,32 @@
+# 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("web_request") {
+  sources = [
+    "form_data_parser.cc",
+    "form_data_parser.h",
+    "upload_data_presenter.cc",
+    "upload_data_presenter.h",
+    "web_request_api.cc",
+    "web_request_api.h",
+    "web_request_api_constants.cc",
+    "web_request_api_constants.h",
+    "web_request_api_helpers.cc",
+    "web_request_api_helpers.h",
+    "web_request_event_details.cc",
+    "web_request_event_details.h",
+    "web_request_event_router_delegate.h",
+    "web_request_permissions.cc",
+    "web_request_permissions.h",
+    "web_request_time_tracker.cc",
+    "web_request_time_tracker.h",
+  ]
+
+  deps = [
+    "//content/public/common",
+    "//extensions/common/api",
+    "//skia",
+    "//third_party/re2",
+  ]
+}