Remove mojo::String.

chrome/browser/media/router/mojo/media_router_mojo_impl_unittest.cc

 // 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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 624 matching lines @@
   run_loop.RunUntilIdle();
   ExpectResultBucketCount("TerminateRoute",
                           RouteRequestResult::ResultCode::OK,
                           1);
 }
 
 TEST_F(MediaRouterMojoImplTest, TerminateRouteFails) {
   base::RunLoop run_loop;
   EXPECT_CALL(mock_media_route_provider_, TerminateRoute(kRouteId, _))
       .WillOnce(Invoke([&run_loop](
-          const mojo::String& route_id,
+          const std::string& route_id,
           const mojom::MediaRouteProvider::TerminateRouteCallback& cb) {
-         cb.Run(std::string("timed out"),
-                mojom::RouteRequestResultCode::TIMED_OUT);
+        cb.Run(std::string("timed out"),
+               mojom::RouteRequestResultCode::TIMED_OUT);
       }));
   router()->TerminateRoute(kRouteId);
   run_loop.RunUntilIdle();
   ExpectResultBucketCount("TerminateRoute",
                           RouteRequestResult::ResultCode::OK,
                           0);
   ExpectResultBucketCount("TerminateRoute",
                           RouteRequestResult::ResultCode::TIMED_OUT,
                           1);
 }
@@ skipping 901 matching lines @@
   EXPECT_CALL(mock_media_route_provider_,
               UpdateMediaSinks(MediaSourceForDesktop().id()))
       .WillOnce(InvokeWithoutArgs([&run_loop2]() {
         run_loop2.Quit();
       }));
 
   run_loop2.Run();
 }
 
 }  // namespace media_router