Change ui cursor identifiers to an enum class.

ui/base/cursor/cursor_loader_ozone.cc

Index: ui/base/cursor/cursor_loader_ozone.cc
diff --git a/ui/base/cursor/cursor_loader_ozone.cc b/ui/base/cursor/cursor_loader_ozone.cc
index 1d74eec7345c738bf3ad0b7a3d36549fe3c2300f..4d67b8d09380a0bcbb65e564c3a3b14a20c9cbb7 100644
--- a/ui/base/cursor/cursor_loader_ozone.cc
+++ b/ui/base/cursor/cursor_loader_ozone.cc
@@ -16,7 +16,7 @@ CursorLoaderOzone::CursorLoaderOzone() {}
 
 CursorLoaderOzone::~CursorLoaderOzone() {}
 
-void CursorLoaderOzone::LoadImageCursor(int id,
+void CursorLoaderOzone::LoadImageCursor(CursorType id,
                                         int resource_id,
                                         const gfx::Point& hot) {
   SkBitmap bitmap;
@@ -28,7 +28,7 @@ void CursorLoaderOzone::LoadImageCursor(int id,
       bitmap, hotspot, scale());
 }
 
-void CursorLoaderOzone::LoadAnimatedCursor(int id,
+void CursorLoaderOzone::LoadAnimatedCursor(CursorType id,
                                            int resource_id,
                                            const gfx::Point& hot,
                                            int frame_delay_ms) {
@@ -51,13 +51,13 @@ void CursorLoaderOzone::UnloadAll() {
 }
 
 void CursorLoaderOzone::SetPlatformCursor(gfx::NativeCursor* cursor) {
-  int native_type = cursor->native_type();
+  CursorType native_type = cursor->native_type();
   PlatformCursor platform;
 
   if (cursors_.count(native_type)) {
     // An image cursor is loaded for this type.
     platform = cursors_[native_type];
-  } else if (native_type == kCursorCustom) {
+  } else if (native_type == CursorType::CUSTOM) {
     // The platform cursor was already set via WebCursor::GetPlatformCursor.
     platform = cursor->platform();
   } else {