[iOS] Upstream physical web classes.

ios/chrome/common/physical_web/BUILD.gn

Index: ios/chrome/common/physical_web/BUILD.gn
diff --git a/ios/chrome/common/physical_web/BUILD.gn b/ios/chrome/common/physical_web/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..52cec6350530756de71f55b1acc4a02b95273525
--- /dev/null
+++ b/ios/chrome/common/physical_web/BUILD.gn
@@ -0,0 +1,29 @@
+# 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("physical_web") {
+  sources = [
+    "physical_web_device.h",
+    "physical_web_device.mm",
+    "physical_web_request.h",
+    "physical_web_request.mm",
+    "physical_web_scanner.h",
+    "physical_web_scanner.mm",
+    "physical_web_types.h",
+    "physical_web_types.mm",
+  ]
+
+  deps = [
+    "//base",
+    "//components/version_info",
+    "//device/bluetooth/uribeacon",
+    "//google_apis",
+    "//ios/web:user_agent",
+  ]
+
+  libs = [
+    "CoreBluetooth.framework",
+    "Foundation.framework",
+  ]
+}