libchrome: Several upstreamable fixes from libchrome

dbus/exported_object.cc

 // Copyright (c) 2012 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.
 
 #include "dbus/exported_object.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 169 matching lines @@
     LOG(ERROR) << "Failed to register the object: " << object_path_.value()
                << ": " << (error.is_set() ? error.message() : "");
     return false;
   }
 
   object_is_registered_ = true;
   return true;
 }
 
 DBusHandlerResult ExportedObject::HandleMessage(
-    DBusConnection* connection,
+    DBusConnection* /* connection */,
     DBusMessage* raw_message) {
   bus_->AssertOnDBusThread();
   DCHECK_EQ(DBUS_MESSAGE_TYPE_METHOD_CALL, dbus_message_get_type(raw_message));
 
   // raw_message will be unrefed on exit of the function. Increment the
   // reference so we can use it in MethodCall.
   dbus_message_ref(raw_message);
   std::unique_ptr<MethodCall> method_call(
       MethodCall::FromRawMessage(raw_message));
   const std::string interface = method_call->GetInterface();
@@ skipping 93 matching lines @@
   }
 
   // The method call was successful.
   bus_->Send(response->raw_message(), NULL);
 
   // Record time spent to handle the the method call. Don't include failures.
   UMA_HISTOGRAM_TIMES("DBus.ExportedMethodHandleTime",
                       base::TimeTicks::Now() - start_time);
 }
 
-void ExportedObject::OnUnregistered(DBusConnection* connection) {
-}
+void ExportedObject::OnUnregistered(DBusConnection* /* connection */) {}
 
 DBusHandlerResult ExportedObject::HandleMessageThunk(
     DBusConnection* connection,
     DBusMessage* raw_message,
     void* user_data) {
   ExportedObject* self = reinterpret_cast<ExportedObject*>(user_data);
   return self->HandleMessage(connection, raw_message);
 }
 
 void ExportedObject::OnUnregisteredThunk(DBusConnection *connection,
                                          void* user_data) {
   ExportedObject* self = reinterpret_cast<ExportedObject*>(user_data);
   return self->OnUnregistered(connection);
 }
 
 }  // namespace dbus