Fix namespace for src/ui/display/.

ui/display/manager/chromeos/apply_content_protection_task.cc

Index: ui/display/manager/chromeos/apply_content_protection_task.cc
diff --git a/ui/display/manager/chromeos/apply_content_protection_task.cc b/ui/display/manager/chromeos/apply_content_protection_task.cc
index eda1907fe47891ca5a6469222d1356cf552d4768..c7a4fcd8283f0344793bb7d141a14defd0fa2ec2 100644
--- a/ui/display/manager/chromeos/apply_content_protection_task.cc
+++ b/ui/display/manager/chromeos/apply_content_protection_task.cc
@@ -8,7 +8,7 @@
 #include "ui/display/types/display_snapshot.h"
 #include "ui/display/types/native_display_delegate.h"
 
-namespace ui {
+namespace display {
 
 namespace {
 
@@ -168,4 +168,4 @@ uint32_t ApplyContentProtectionTask::GetDesiredProtectionMask(
   return desired_mask;
 }
 
-}  // namespace ui
+}  // namespace display