gpu/config: remove CollectGpuID

gpu/config/gpu_info_collector_mac.mm

Index: gpu/config/gpu_info_collector_mac.mm
diff --git a/gpu/config/gpu_info_collector_mac.mm b/gpu/config/gpu_info_collector_mac.mm
index 7fecec0ec99c7bd0293a442094229633c28deade..7dcde19ef35f00a16aba08643abb72a9e21b1007 100644
--- a/gpu/config/gpu_info_collector_mac.mm
+++ b/gpu/config/gpu_info_collector_mac.mm
@@ -182,18 +182,6 @@ CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
   return result;
 }
 
-CollectInfoResult CollectGpuID(uint32_t* vendor_id, uint32_t* device_id) {
-  DCHECK(vendor_id && device_id);
-
-  GPUInfo::GPUDevice gpu = GetActiveGPU();
-  *vendor_id = gpu.vendor_id;
-  *device_id = gpu.device_id;
-
-  if (*vendor_id != 0 && *device_id != 0)
-    return kCollectInfoSuccess;
-  return kCollectInfoNonFatalFailure;
-}
-
 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
   DCHECK(gpu_info);