Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/webui/media_router/media_router_webui_message_handler_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 "base/macros.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/media_router/media_router_test.h"
 #include "chrome/browser/ui/webui/media_router/media_router_ui.h"
@@ skipping 76 matching lines @@
     mock_media_router_ui_.reset();
     web_ui_.reset();
     BrowserWithTestWindowTest::TearDown();
   }
 
   const std::string& provider_extension_id() const {
     return provider_extension_id_;
   }
 
  protected:
-  scoped_ptr<content::TestWebUI> web_ui_;
-  scoped_ptr<MockMediaRouterUI> mock_media_router_ui_;
-  scoped_ptr<TestMediaRouterWebUIMessageHandler> handler_;
+  std::unique_ptr<content::TestWebUI> web_ui_;
+  std::unique_ptr<MockMediaRouterUI> mock_media_router_ui_;
+  std::unique_ptr<TestMediaRouterWebUIMessageHandler> handler_;
   const std::string provider_extension_id_;
 };
 
 TEST_F(MediaRouterWebUIMessageHandlerTest, UpdateSinks) {
   MediaSink::Id sink_id("sinkId123");
   std::string sink_name("The sink");
 
   std::vector<MediaSinkWithCastModes> media_sink_with_cast_modes_list;
   MediaSinkWithCastModes media_sink_with_cast_modes(
       MediaSink(sink_id, sink_name, MediaSink::IconType::CAST));
@@ skipping 340 matching lines @@
 
   EXPECT_TRUE(issue_value->GetString("routeId", &value));
   EXPECT_EQ(route_id, value);
 
   bool actual_is_blocking = false;
   EXPECT_TRUE(issue_value->GetBoolean("isBlocking", &actual_is_blocking));
   EXPECT_EQ(is_blocking, actual_is_blocking);
 }
 
 }  // namespace media_router