[Chromoting] Use device::PowerSaveBlocker to block screen saver

remoting/host/client_session_unittest.cc

Index: remoting/host/client_session_unittest.cc
diff --git a/remoting/host/client_session_unittest.cc b/remoting/host/client_session_unittest.cc
index c38021a50c3ae3083f5f8b95c0b43b4a8e36773a..f91e93fb046fae6f9d51ec9967f7e461ed5163fb 100644
--- a/remoting/host/client_session_unittest.cc
+++ b/remoting/host/client_session_unittest.cc
@@ -96,7 +96,9 @@ protocol::ClipboardEvent MakeClipboardEvent(const std::string& text) {
 
 class ClientSessionTest : public testing::Test {
  public:
-  ClientSessionTest() : client_jid_("user@domain/rest-of-jid") {}
+  ClientSessionTest()
+      : message_loop_(base::MessageLoop::TYPE_IO),
+        client_jid_("user@domain/rest-of-jid") {}
 
   void SetUp() override;
   void TearDown() override;
@@ -169,7 +171,7 @@ void ClientSessionTest::TearDown() {
   // Clear out |task_runner_| reference so the loop can quit, and run it until
   // it does.
   task_runner_ = nullptr;
-  run_loop_.Run();
+  run_loop_.QuitWhenIdle();
 }
 
 void ClientSessionTest::CreateClientSession() {
@@ -186,8 +188,8 @@ void ClientSessionTest::CreateClientSession() {
   connection_ = connection.get();
 
   client_session_.reset(new ClientSession(
+      *ChromotingHostContext::CreateForTest(task_runner_),
       &session_event_handler_,
-      task_runner_,  // Audio thread.
       std::move(connection), desktop_environment_factory_.get(),
       base::TimeDelta(), nullptr, extensions_));
 }
@@ -416,7 +418,7 @@ TEST_F(ClientSessionTest, Extensions) {
   message4.set_data("data");
   client_session_->DeliverClientMessage(message4);
 
-  base::RunLoop().RunUntilIdle();
+  base::RunLoop().QuitWhenIdle();
 
   // ext1 was instantiated and sent a message, and did not wrap anything.
   EXPECT_TRUE(extension1.was_instantiated());