Convert //ash from scoped_ptr to std::unique_ptr

ash/display/json_converter_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 "ash/display/json_converter.h"
 
+#include <memory>
+
 #include "base/json/json_reader.h"
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/display/manager/display_layout.h"
 
 namespace ash {
 
 TEST(JsonConverterTest, JsonFromToDisplayLayout) {
   display::DisplayLayout layout;
   layout.primary_id = 1;
@@ skipping 25 matching lines @@
       "    \"offset\": 0\n"
       "  },{\n"
       "    \"display_id\": \"3\",\n"
       "    \"parent_display_id\": \"2\",\n"
       "    \"position\": \"left\",\n"
       "    \"offset\": 30\n"
       "  }]\n"
       "}";
   int error_code = 0, error_line, error_column;
   std::string error_msg;
-  scoped_ptr<base::Value> read_value(base::JSONReader::ReadAndReturnError(
+  std::unique_ptr<base::Value> read_value(base::JSONReader::ReadAndReturnError(
       data, 0, &error_code, &error_msg, &error_line, &error_column));
   ASSERT_EQ(0, error_code) << error_msg << " at " << error_line << ":"
                            << error_column;
   EXPECT_TRUE(value.Equals(read_value.get()));
 
   display::DisplayLayout read_layout;
   EXPECT_TRUE(JsonToDisplayLayout(*read_value, &read_layout));
   EXPECT_EQ(read_layout.mirrored, layout.mirrored);
   EXPECT_EQ(read_layout.primary_id, layout.primary_id);
   EXPECT_EQ(read_layout.default_unified, layout.default_unified);
   EXPECT_TRUE(read_layout.HasSamePlacementList(layout));
 }
 
 TEST(JsonConverterTest, OldJsonToDisplayLayout) {
   const char data[] =
       "{\n"
       "  \"primary-id\": \"1\",\n"
       "  \"mirrored\": true,\n"
       "  \"default_unified\": false,\n"
       "  \"position\": \"bottom\",\n"
       "  \"offset\": 20\n"
       "}";
   int error_code = 0, error_line, error_column;
   std::string error_msg;
-  scoped_ptr<base::Value> read_value(base::JSONReader::ReadAndReturnError(
+  std::unique_ptr<base::Value> read_value(base::JSONReader::ReadAndReturnError(
       data, 0, &error_code, &error_msg, &error_line, &error_column));
   ASSERT_EQ(0, error_code) << error_msg << " at " << error_line << ":"
                            << error_column;
 
   display::DisplayLayout read_layout;
   EXPECT_TRUE(JsonToDisplayLayout(*read_value, &read_layout));
   EXPECT_EQ(true, read_layout.mirrored);
   EXPECT_EQ(1, read_layout.primary_id);
   EXPECT_EQ(false, read_layout.default_unified);
   ASSERT_EQ(1u, read_layout.placement_list.size());
   EXPECT_EQ(display::DisplayPlacement::BOTTOM,
             read_layout.placement_list[0].position);
   EXPECT_EQ(20, read_layout.placement_list[0].offset);
 }
 
 }  // namespace ash