Remove domain from weave::Error

We don't filter out errors by domain in libweave.

BUG:26071451
Change-Id: I2114450aca1c8ede71cc45f19bd8e71d3464cb73
Reviewed-on: https://weave-review.googlesource.com/2289
Reviewed-by: Alex Vakulenko <avakulenko@google.com>
diff --git a/examples/provider/wifi_manager.cc b/examples/provider/wifi_manager.cc
index ed6a9fd..cad882d 100644
--- a/examples/provider/wifi_manager.cc
+++ b/examples/provider/wifi_manager.cc
@@ -84,7 +84,7 @@
 
   if (base::Time::Now() >= until) {
     ErrorPtr error;
-    Error::AddTo(&error, FROM_HERE, "wifi", "timeout",
+    Error::AddTo(&error, FROM_HERE, "timeout",
                  "Timeout connecting to WiFI network.");
     task_runner_->PostDelayedTask(
         FROM_HERE, base::Bind(callback, base::Passed(&error)), {});
@@ -105,7 +105,7 @@
   CHECK(!hostapd_started_);
   if (hostapd_started_) {
     ErrorPtr error;
-    Error::AddTo(&error, FROM_HERE, "wifi", "busy", "Running Access Point.");
+    Error::AddTo(&error, FROM_HERE, "busy", "Running Access Point.");
     task_runner_->PostDelayedTask(
         FROM_HERE, base::Bind(callback, base::Passed(&error)), {});
     return;