Update cef_mac.pxd: fix SetAsChild signature, add runtime_style/enum

- SetAsChild(parent, x, y, w, h) -> SetAsChild(parent, CefRect)
- Add cef_runtime_style_t enum with CEF_RUNTIME_STYLE_ALLOY
- Add runtime_style field to CefWindowInfo
- Import CefRect from cef_types

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: linesight

src/extern/cef/cef_mac.pxd

@@ -5,15 +5,22 @@
 include "compile_time_constants.pxi"
 
 from libcpp cimport bool as cpp_bool
+from cef_types cimport CefRect
 
 cdef extern from "include/internal/cef_mac.h":
 
     ctypedef void* CefWindowHandle
     ctypedef void* CefCursorHandle
 
+    ctypedef enum cef_runtime_style_t:
+        CEF_RUNTIME_STYLE_DEFAULT
+        CEF_RUNTIME_STYLE_CHROME
+        CEF_RUNTIME_STYLE_ALLOY
+
     cdef cppclass CefWindowInfo:
+        cef_runtime_style_t runtime_style
         void SetAsChild(CefWindowHandle parent,
-                        int x, int y, int width, int height)
+                        const CefRect& windowRect)
         void SetAsWindowless(CefWindowHandle parent)
 
     cdef cppclass CefMainArgs: