Remove unused fields from //content.

content/browser/bluetooth/bluetooth_dispatcher_host.cc

Index: content/browser/bluetooth/bluetooth_dispatcher_host.cc
diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.cc b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
index 01806135e7fcf2fd3d0ff3ab5e7ad7c28bf9dc39..9451f96f2ff8facd812730010f4685b0fc3e04ca 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.cc
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
@@ -368,13 +368,11 @@ struct BluetoothDispatcherHost::RequestDeviceSession {
  public:
   RequestDeviceSession(int thread_id,
                        int request_id,
-                       int frame_routing_id,

[ncarter (slow), 2016/04/14 17:37:36]

My understanding is that the bluetooth code is in the process of migrating to be
RFH-based. So I don't know that removing this is okay -- we may just be creating
work.

Could you loop ortuno@ in for an opinion on this file?

[ortuno, 2016/04/14 17:53:53]

This is OK. We used to save the routing id so we could get the origin but now
that we save the origin in the session we don't need the routing it.

                        url::Origin origin,
                        const std::vector<BluetoothScanFilter>& filters,
                        const std::vector<BluetoothUUID>& optional_services)
       : thread_id(thread_id),
         request_id(request_id),
-        frame_routing_id(frame_routing_id),
         origin(origin),
         filters(filters),
         optional_services(optional_services) {}
@@ -401,7 +399,6 @@ struct BluetoothDispatcherHost::RequestDeviceSession {
 
   const int thread_id;
   const int request_id;
-  const int frame_routing_id;
   const url::Origin origin;
   const std::vector<BluetoothScanFilter> filters;
   const std::vector<BluetoothUUID> optional_services;
@@ -1260,9 +1257,9 @@ void BluetoothDispatcherHost::OnRequestDeviceImpl(
 
   // Create storage for the information that backs the chooser, and show the
   // chooser.
-  RequestDeviceSession* const session = new RequestDeviceSession(
-      thread_id, request_id, frame_routing_id, requesting_origin, filters,
-      optional_services_blacklist_filtered);
+  RequestDeviceSession* const session =
+      new RequestDeviceSession(thread_id, request_id, requesting_origin,
+                               filters, optional_services_blacklist_filtered);
   int chooser_id = request_device_sessions_.Add(session);
 
   BluetoothChooser::EventHandler chooser_event_handler =