Add service name constant for UI service.

services/ui/ime/ime_unittest.cc

 // Copyright 2016 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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "services/service_manager/public/cpp/service_context.h"
 #include "services/service_manager/public/cpp/service_test.h"
+#include "services/ui/public/interfaces/constants.mojom.h"
 #include "services/ui/public/interfaces/ime.mojom.h"
 #include "ui/events/event.h"
 
 class TestTextInputClient : public ui::mojom::TextInputClient {
  public:
   explicit TestTextInputClient(ui::mojom::TextInputClientRequest request)
       : binding_(this, std::move(request)) {}
 
   ui::mojom::CompositionEventPtr WaitUntilCompositionEvent() {
     if (!receieved_composition_event_) {
@@ skipping 22 matching lines @@
 class IMEAppTest : public service_manager::test::ServiceTest {
  public:
   IMEAppTest() : ServiceTest("mus_ime_unittests") {}
   ~IMEAppTest() override {}
 
   // service_manager::test::ServiceTest:
   void SetUp() override {
     ServiceTest::SetUp();
     // test_ime_driver will register itself as the current IMEDriver.
     connector()->Connect("test_ime_driver");
-    connector()->ConnectToInterface("ui", &ime_server_);
+    connector()->ConnectToInterface(ui::mojom::kServiceName, &ime_server_);
   }
 
   bool ProcessKeyEvent(ui::mojom::InputMethodPtr* input_method,
                        std::unique_ptr<ui::Event> event) {
     (*input_method)
         ->ProcessKeyEvent(std::move(event),
                           base::Bind(&IMEAppTest::ProcessKeyEventCallback,
                                      base::Unretained(this)));
 
     run_loop_.reset(new base::RunLoop);
@@ skipping 38 matching lines @@
   ui::KeyEvent* received_key_event =
       composition_event->key_event.value()->AsKeyEvent();
   EXPECT_EQ(ui::ET_KEY_PRESSED, received_key_event->type());
   EXPECT_TRUE(received_key_event->is_char());
   EXPECT_EQ(char_event.GetCharacter(), received_key_event->GetCharacter());
 
   // Send non-character key event.
   ui::KeyEvent nonchar_event(ui::ET_KEY_PRESSED, ui::VKEY_LEFT, 0);
   EXPECT_FALSE(ProcessKeyEvent(&input_method, ui::Event::Clone(nonchar_event)));
 }