message: Conditionally include differ_vector_sse2.h only when on x86 platforms.
  Cr-Commit-Position: refs/heads/main@{#37983}
diff: #include <string.h>
  -#include "modules/desktop_capture/differ_vector_sse2.h"
  #include "rtc_base/system/arch.h"
  #include "system_wrappers/include/cpu_features_wrapper.h"
  +// This needs to be after rtc_base/system/arch.h which defines
  +// architecture macros.
  +#if defined(WEBRTC_ARCH_X86_FAMILY)
  +#include "modules/desktop_capture/differ_vector_sse2.h"
  +#endif
  +
  namespace webrtc {
  namespace {
  