C++20 fixes.

u8"" no longer produces a char*.  Use "" instead, which also accepts
UTF-8 literals.

Bug: chromium:1284275
Change-Id: Ida84b82670eb1238a606d3fe8c4eb40fbc23165e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/263760
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Mark Foltz <mfoltz@chromium.org>
Commit-Queue: Mark Foltz <mfoltz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#37005}
diff --git a/modules/desktop_capture/mac/full_screen_mac_application_handler.cc b/modules/desktop_capture/mac/full_screen_mac_application_handler.cc
index 36e16cb..a56731a 100644
--- a/modules/desktop_capture/mac/full_screen_mac_application_handler.cc
+++ b/modules/desktop_capture/mac/full_screen_mac_application_handler.cc
@@ -21,33 +21,33 @@
 namespace {
 
 static constexpr const char* kPowerPointSlideShowTitles[] = {
-    u8"PowerPoint-Bildschirmpräsentation",
-    u8"Προβολή παρουσίασης PowerPoint",
-    u8"PowerPoint スライド ショー",
-    u8"PowerPoint Slide Show",
-    u8"PowerPoint 幻灯片放映",
-    u8"Presentación de PowerPoint",
-    u8"PowerPoint-slideshow",
-    u8"Presentazione di PowerPoint",
-    u8"Prezentácia programu PowerPoint",
-    u8"Apresentação do PowerPoint",
-    u8"PowerPoint-bildspel",
-    u8"Prezentace v aplikaci PowerPoint",
-    u8"PowerPoint 슬라이드 쇼",
-    u8"PowerPoint-lysbildefremvisning",
-    u8"PowerPoint-vetítés",
-    u8"PowerPoint Slayt Gösterisi",
-    u8"Pokaz slajdów programu PowerPoint",
-    u8"PowerPoint 投影片放映",
-    u8"Демонстрация PowerPoint",
-    u8"Diaporama PowerPoint",
-    u8"PowerPoint-diaesitys",
-    u8"Peragaan Slide PowerPoint",
-    u8"PowerPoint-diavoorstelling",
-    u8"การนำเสนอสไลด์ PowerPoint",
-    u8"Apresentação de slides do PowerPoint",
-    u8"הצגת שקופיות של PowerPoint",
-    u8"عرض شرائح في PowerPoint"};
+    "PowerPoint-Bildschirmpräsentation",
+    "Προβολή παρουσίασης PowerPoint",
+    "PowerPoint スライド ショー",
+    "PowerPoint Slide Show",
+    "PowerPoint 幻灯片放映",
+    "Presentación de PowerPoint",
+    "PowerPoint-slideshow",
+    "Presentazione di PowerPoint",
+    "Prezentácia programu PowerPoint",
+    "Apresentação do PowerPoint",
+    "PowerPoint-bildspel",
+    "Prezentace v aplikaci PowerPoint",
+    "PowerPoint 슬라이드 쇼",
+    "PowerPoint-lysbildefremvisning",
+    "PowerPoint-vetítés",
+    "PowerPoint Slayt Gösterisi",
+    "Pokaz slajdów programu PowerPoint",
+    "PowerPoint 投影片放映",
+    "Демонстрация PowerPoint",
+    "Diaporama PowerPoint",
+    "PowerPoint-diaesitys",
+    "Peragaan Slide PowerPoint",
+    "PowerPoint-diavoorstelling",
+    "การนำเสนอสไลด์ PowerPoint",
+    "Apresentação de slides do PowerPoint",
+    "הצגת שקופיות של PowerPoint",
+    "عرض شرائح في PowerPoint"};
 
 class FullScreenMacApplicationHandler : public FullScreenApplicationHandler {
  public: