Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/creator/symbols_unix.map

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+/* Hide all symbols except a few required ones.
+ *
+ * Otherwise LLVM symbols conflict with Mesa llvm pipe, boost symbols conflict
+ * with Luxrender, etc. */
+{
+global:
+  /* Essential symbols for the program to start and exit. */
+  _fini;
+  _init;
+  /* Needed for Python modules to work. */
+  Py*;
+  _Py*;
+  /* Needed for sanitizers. Based on:
+   * llvm/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py. */
+  __asan*;
+  __lsan*;
+  __tsan*;
+  __ubsan*;
+  __sanitizer*;
+  /* Memory allocation (new, delete, malloc). */
+  __Znw*;
+  __Zna*;
+  __Zdl*;
+  __Zda*;
+  aligned_alloc*;
+  calloc*;
+  free*;
+  mallinfo*;
+  malloc*;
+  mallopt*;
+  memalign*;
+  memcpy*;
+  posix_memalign*;
+  pthread_*;
+  pvalloc*;
+  realloc*;
+  realpath*;
+  sched_*;
+  valloc*;
+  /* Needed on FreeBSD. Uses wildcard to avoid linker error when symbols are not found. */
+  __progname*;
+  environ*;
+local:
+  *;
+};