Add support for ProxyResolverErrorObserver to ProxyResolverMojo.

net/proxy/proxy_resolver_error_observer_mojo.cc

Index: net/proxy/proxy_resolver_error_observer_mojo.cc
diff --git a/net/proxy/proxy_resolver_error_observer_mojo.cc b/net/proxy/proxy_resolver_error_observer_mojo.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f278c609186616ed8ef4e7cf37f3adf4b331125f
--- /dev/null
+++ b/net/proxy/proxy_resolver_error_observer_mojo.cc
@@ -0,0 +1,46 @@
+// Copyright 2015 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 "net/proxy/proxy_resolver_error_observer_mojo.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/message_loop/message_loop_proxy.h"
+#include "mojo/common/common_type_converters.h"
+
+namespace net {
+
+// static
+scoped_ptr<ProxyResolverErrorObserver> ProxyResolverErrorObserverMojo::Create(
+    interfaces::ProxyResolverErrorObserverPtr error_observer) {
+  if (!error_observer)
+    return nullptr;
+
+  return scoped_ptr<ProxyResolverErrorObserver>(
+      new ProxyResolverErrorObserverMojo(error_observer.Pass()));
+}
+
+void ProxyResolverErrorObserverMojo::OnPACScriptError(
+    int line_number,
+    const base::string16& error) {
+  if (!task_runner_->RunsTasksOnCurrentThread()) {
+    task_runner_->PostTask(
+        FROM_HERE, base::Bind(&ProxyResolverErrorObserverMojo::OnPACScriptError,

[eroman, 2015/05/15 07:22:03]

So the reason for this is that the mojo interface expects calls on task_runner_
thread?

[Sam McNally, 2015/05/15 09:44:59]

Yes.

+                              weak_this_, line_number, error));
+    return;
+  }
+  error_observer_->OnPacScriptError(line_number, mojo::String::From(error));
+}
+
+ProxyResolverErrorObserverMojo::ProxyResolverErrorObserverMojo(
+    interfaces::ProxyResolverErrorObserverPtr error_observer)
+    : error_observer_(error_observer.Pass()),
+      task_runner_(base::MessageLoopProxy::current()),
+      weak_factory_(this) {
+  weak_this_ = weak_factory_.GetWeakPtr();
+}
+
+ProxyResolverErrorObserverMojo::~ProxyResolverErrorObserverMojo() = default;
+
+}  // namespace net