Fix namespace for src/ui/display/.

ui/display/types/display_constants.h

 // 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.
 
 #ifndef UI_DISPLAY_TYPES_DISPLAY_CONSTANTS_H_
 #define UI_DISPLAY_TYPES_DISPLAY_CONSTANTS_H_
 
 #include <stdint.h>
 
 namespace display {
 
 // Display ID that represents an invalid display. Often used as a default value
 // before display IDs are known.
 constexpr int64_t kInvalidDisplayId = -1;
 
-}  // namespace display
-
-namespace ui {
-
 // Used to describe the state of a multi-display configuration.
 enum MultipleDisplayState {
   MULTIPLE_DISPLAY_STATE_INVALID,
   MULTIPLE_DISPLAY_STATE_HEADLESS,
   MULTIPLE_DISPLAY_STATE_SINGLE,
   MULTIPLE_DISPLAY_STATE_DUAL_MIRROR,
   MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED,
   // TODO(oshima): consolidate DUAL_EXTENDED and MULTI_EXTENDED.
   MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED,
 };
@@ skipping 33 matching lines @@
 // Color calibration profiles. Don't change the order, and edit
 // tools/metrics/histograms/histograms.xml when a new item is added.
 enum ColorCalibrationProfile {
   COLOR_PROFILE_STANDARD,
   COLOR_PROFILE_DYNAMIC,
   COLOR_PROFILE_MOVIE,
   COLOR_PROFILE_READING,
   NUM_COLOR_PROFILES,
 };
 
-}  // namespace ui
+}  // namespace display
 
 #endif  // UI_DISPLAY_TYPES_DISPLAY_CONSTANTS_H_