Pass Physical Web metadata through a struct

components/physical_web/data_source/BUILD.gn

 # 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("data_source") {
   sources = [
     "physical_web_data_source.cc",
     "physical_web_data_source.h",
     "physical_web_data_source_impl.cc",
     "physical_web_data_source_impl.h",
     "physical_web_listener.h",
   ]
 
   deps = [
     "//base",
+    "//url",

[nyquist, 2017/01/05 07:42:28]

This deps will also be required by packages that depend on this, since the
dependency is in the public header. Move this to a new public_deps entry
instead. In fact, a //base dependency is also now in the header, so just change
'deps =' on line 14 to 'public_deps ='

[cco3, 2017/01/05 23:52:56]

Done.

   ]
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "fake_physical_web_data_source.cc",
     "fake_physical_web_data_source.h",
   ]
   deps = [
     ":data_source",
     "//base",
     "//url",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "physical_web_data_source_impl_unittest.cc",
   ]
 
   deps = [
     ":data_source",
     "//base",
     "//testing/gtest",
     "//url",
   ]
 }