Display: set color_depth and depth_per_component value based on kEnableHDROutput

ui/display/display_unittest.cc

 // 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/display.h"
 
 #include "base/command_line.h"
+#include "base/test/scoped_command_line.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/display/display_switches.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace display {
 
 TEST(DisplayTest, WorkArea) {
   Display display(0, gfx::Rect(0, 0, 100, 100));
@@ skipping 27 matching lines @@
   EXPECT_EQ("10,10 50x50", display.work_area().ToString());
 
   // Scale it back to 1x
   display.SetScaleAndBounds(1.0f, gfx::Rect(0, 0, 100, 100));
   EXPECT_EQ("0,0 100x100", display.bounds().ToString());
   EXPECT_EQ("10,10 80x80", display.work_area().ToString());
 }
 
 // https://crbug.com/517944
 TEST(DisplayTest, ForcedDeviceScaleFactorByCommandLine) {
+  base::test::ScopedCommandLine scoped_command_line;
+  base::CommandLine* command_line = scoped_command_line.GetProcessCommandLine();
+
   Display::ResetForceDeviceScaleFactorForTesting();
 
-  // Look ma, no value!
-  base::CommandLine::ForCurrentProcess()->AppendSwitch(
-      switches::kForceDeviceScaleFactor);
+  command_line->AppendSwitch(switches::kForceDeviceScaleFactor);
 
   EXPECT_EQ(1, Display::GetForcedDeviceScaleFactor());
   Display::ResetForceDeviceScaleFactorForTesting();
 }
 
+TEST(DisplayTest, DisplayHDRValues) {
+  base::test::ScopedCommandLine scoped_command_line;
+  base::CommandLine* command_line = scoped_command_line.GetProcessCommandLine();
+  {
+    Display display;
+    EXPECT_EQ(24, display.color_depth());
+    EXPECT_EQ(8, display.depth_per_component());
+  }
+
+  command_line->AppendSwitch(switches::kEnableHDR);
+  {
+    Display display;
+    EXPECT_EQ(48, display.color_depth());
+    EXPECT_EQ(16, display.depth_per_component());
+  }
+}
+
 }  // namespace display