Change ui cursor identifiers to an enum class.

ui/views/native_cursor_aura.cc

Index: ui/views/native_cursor_aura.cc
diff --git a/ui/views/native_cursor_aura.cc b/ui/views/native_cursor_aura.cc
index cafe684aa0b4f4e76ce383b2facfcde07288da80..0ce238b1c0c56683a989538be0e0afeb72ef2b48 100644
--- a/ui/views/native_cursor_aura.cc
+++ b/ui/views/native_cursor_aura.cc
@@ -9,23 +9,23 @@
 namespace views {
 
 gfx::NativeCursor GetNativeIBeamCursor() {
-  return ui::kCursorIBeam;
+  return ui::CursorType::kIBeam;
 }
 
 gfx::NativeCursor GetNativeHandCursor() {
-  return ui::kCursorHand;
+  return ui::CursorType::kHand;
 }
 
 gfx::NativeCursor GetNativeColumnResizeCursor() {
-  return ui::kCursorColumnResize;
+  return ui::CursorType::kColumnResize;
 }
 
 gfx::NativeCursor GetNativeEastWestResizeCursor() {
-  return ui::kCursorEastWestResize;
+  return ui::CursorType::kEastWestResize;
 }
 
 gfx::NativeCursor GetNativeNorthSouthResizeCursor() {
-  return ui::kCursorNorthSouthResize;
+  return ui::CursorType::kNorthSouthResize;
 }
 
 }  // namespace views