Delete TestDisplaySnapshot and update tests.

ui/display/chromeos/test/test_display_snapshot.cc

-// Copyright 2014 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 "ui/display/chromeos/test/test_display_snapshot.h"
-
-namespace ui {
-TestDisplaySnapshot::TestDisplaySnapshot()
-    : DisplaySnapshot(0,
-                      gfx::Point(0, 0),
-                      gfx::Size(0, 0),
-                      DISPLAY_CONNECTION_TYPE_UNKNOWN,
-                      false,
-                      false,
-                      false,
-                      std::string(),
-                      base::FilePath(),
-                      std::vector<std::unique_ptr<const DisplayMode>>(),
-                      std::vector<uint8_t>(),
-                      NULL,
-                      NULL) {}
-
-TestDisplaySnapshot::TestDisplaySnapshot(
-    int64_t display_id,
-    const gfx::Point& origin,
-    const gfx::Size& physical_size,
-    DisplayConnectionType type,
-    bool is_aspect_preserving_scaling,
-    int64_t product_id,
-    bool has_color_correction_matrix,
-    std::vector<std::unique_ptr<const DisplayMode>> modes,
-    const DisplayMode* current_mode,
-    const DisplayMode* native_mode)
-    : DisplaySnapshot(display_id,
-                      origin,
-                      physical_size,
-                      type,
-                      is_aspect_preserving_scaling,
-                      false,
-                      has_color_correction_matrix,
-                      std::string(),
-                      base::FilePath(),
-                      std::move(modes),
-                      std::vector<uint8_t>(),
-                      current_mode,
-                      native_mode) {
-  product_id_ = product_id;
-}
-
-TestDisplaySnapshot::~TestDisplaySnapshot() {}
-
-std::string TestDisplaySnapshot::ToString() const { return ""; }
-
-}  // namespace ui