Incorporate comments in Dbus code and add Eol icon

chromeos/dbus/fake_update_engine_client.cc

Index: chromeos/dbus/fake_update_engine_client.cc
diff --git a/chromeos/dbus/fake_update_engine_client.cc b/chromeos/dbus/fake_update_engine_client.cc
index 7add9236554455643f3fd87e2280b4b804c633fd..d4b88c5c8e5dfa0008ee38894046b85584bd376b 100644
--- a/chromeos/dbus/fake_update_engine_client.cc
+++ b/chromeos/dbus/fake_update_engine_client.cc
@@ -4,6 +4,8 @@
 
 #include "chromeos/dbus/fake_update_engine_client.h"
 
+#include "base/bind.h"
+
 namespace chromeos {
 
 FakeUpdateEngineClient::FakeUpdateEngineClient()
@@ -12,8 +14,8 @@ FakeUpdateEngineClient::FakeUpdateEngineClient()
       reboot_after_update_call_count_(0),
       request_update_check_call_count_(0),
       rollback_call_count_(0),
-      can_rollback_call_count_(0) {
-}
+      can_rollback_call_count_(0),
+      weak_ptr_factory_(this) {}
 
 FakeUpdateEngineClient::~FakeUpdateEngineClient() {
 }
@@ -73,10 +75,15 @@ void FakeUpdateEngineClient::SetChannel(const std::string& target_channel,
 
 void FakeUpdateEngineClient::GetChannel(bool get_current_channel,
                                         const GetChannelCallback& callback) {
+  base::Bind(&FakeUpdateEngineClient::OnGetChannel,

[hashimoto, 2016/06/21 03:09:52]

This line does nothing.
If you want to run the callback asynchronously, it should be:

  base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, base::Bind(callback,
<callback argument>));

[xiaoyinh(OOO Sep 11-29), 2016/06/22 18:25:40]

Thank you so much! Done.

+             weak_ptr_factory_.GetWeakPtr(), callback);
 }
 
 void FakeUpdateEngineClient::GetEolStatus(
-    const GetEolStatusCallback& callback) {}
+    const GetEolStatusCallback& callback) {
+  base::Bind(&FakeUpdateEngineClient::OnGetEolStatus,

[hashimoto, 2016/06/21 03:09:52]

ditto.

[xiaoyinh(OOO Sep 11-29), 2016/06/22 18:25:40]

Done.

+             weak_ptr_factory_.GetWeakPtr(), callback);
+}
 
 void FakeUpdateEngineClient::set_default_status(
     const UpdateEngineClient::Status& status) {