color: Add NSScreenColorSpaceDidChangeNotification observer

ui/display/mac/screen_mac.mm

 // Copyright (c) 2012 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/screen.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #import <Cocoa/Cocoa.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
+#include "base/mac/scoped_nsobject.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "ui/display/display.h"
 #include "ui/display/display_change_notifier.h"
 #include "ui/gfx/color_space_switches.h"
 #include "ui/gfx/icc_profile.h"
 #include "ui/gfx/mac/coordinate_conversion.h"
 
 extern "C" {
@@ skipping 55 matching lines @@
 
   // On Sierra, we need to operate in a single screen's color space because
   // IOSurfaces do not opt-out of color correction.
   // https://crbug.com/654488
   CGColorSpaceRef color_space = [[screen colorSpace] CGColorSpace];
   static bool color_correct_rendering_enabled =
       base::FeatureList::IsEnabled(features::kColorCorrectRendering);
   if (base::mac::IsAtLeastOS10_12() && !color_correct_rendering_enabled)
     color_space = base::mac::GetSystemColorSpace();
 
-  display.set_color_space(
-      gfx::ICCProfile::FromCGColorSpace(color_space).GetColorSpace());
+  if (!gfx::ICCProfile::HasForcedProfile()) {
+    display.set_color_space(
+        gfx::ICCProfile::FromCGColorSpace(color_space).GetColorSpace());
+  }
   display.set_color_depth(NSBitsPerPixelFromDepth([screen depth]));
   display.set_depth_per_component(NSBitsPerSampleFromDepth([screen depth]));
   display.set_is_monochrome(CGDisplayUsesForceToGray());
 
   // CGDisplayRotation returns a double. Display::SetRotationAsDegree will
   // handle the unexpected situations were the angle is not a multiple of 90.
   display.SetRotationAsDegree(static_cast<int>(CGDisplayRotation(display_id)));
   return display;
 }
 
@@ skipping 20 matching lines @@
  public:
   ScreenMac()
       : configure_timer_(
             FROM_HERE,
             base::TimeDelta::FromMilliseconds(kConfigureDelayMs),
             base::Bind(&ScreenMac::ConfigureTimerFired, base::Unretained(this)),
             false) {
     old_displays_ = displays_ = BuildDisplaysFromQuartz();
     CGDisplayRegisterReconfigurationCallback(
         ScreenMac::DisplayReconfigurationCallBack, this);
+
+    NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+    screen_color_change_observer_.reset(
+        [[center addObserverForName:NSScreenColorSpaceDidChangeNotification
+                             object:nil
+                              queue:nil
+                         usingBlock:^(NSNotification* notification) {
+                           configure_timer_.Reset();
+                           displays_require_update_ = true;
+                         }] retain]);
   }
 
   ~ScreenMac() override {
+    NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+    [center removeObserver:screen_color_change_observer_];
+
     CGDisplayRemoveReconfigurationCallback(
         ScreenMac::DisplayReconfigurationCallBack, this);
   }
 
   gfx::Point GetCursorScreenPoint() override {
     // Flip coordinates to gfx (0,0 in top-left corner) using primary screen.
     return gfx::ScreenPointFromNSPoint([NSEvent mouseLocation]);
   }
 
   bool IsWindowUnderCursor(gfx::NativeWindow window) override {
@@ skipping 176 matching lines @@
   // Set whenever the CGDisplayRegisterReconfigurationCallback is invoked and
   // cleared when |displays_| is updated by BuildDisplaysFromQuartz().
   mutable bool displays_require_update_ = false;
 
   // The displays last communicated to DisplayChangeNotifier.
   std::vector<Display> old_displays_;
 
   // The timer to delay configuring outputs and notifying observers.
   base::Timer configure_timer_;
 
+  // The observer notified by NSScreenColorSpaceDidChangeNotification.
+  base::scoped_nsobject<id> screen_color_change_observer_;
+
   DisplayChangeNotifier change_notifier_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenMac);
 };
 
 }  // namespace
 
 // static
 gfx::NativeWindow Screen::GetWindowForView(gfx::NativeView view) {
   NSWindow* window = nil;
 #if !defined(USE_AURA)
   window = [view window];
 #endif
   return window;
 }
 
 #if !defined(USE_AURA)
 Screen* CreateNativeScreen() {
   return new ScreenMac;
 }
 #endif
 
 }  // namespace display