Add driverApiVersion in GPUDeviceInfo

Bug: chromium:1340081
Change-Id: I9a1b190d3299b4f5e4603ac3e45869f385df0c48
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3913426
Auto-Submit: Peng Huang <penghuang@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

src/gpu_info_util/SystemInfo.h

@@ -47,9 +47,10 @@ struct GPUDeviceInfo
     std::string driverVersion;
     std::string driverDate;
 
-    // Only available via GetSystemInfoVulkan currently.
+    // Fields only available via GetSystemInfoVulkan:
     VersionInfo detailedDriverVersion;
-    DriverID driverId = 0;
+    DriverID driverId         = 0;
+    uint32_t driverApiVersion = 0;
 };
 
 struct SystemInfo

src/gpu_info_util/SystemInfo_vulkan.cpp

@@ -273,8 +273,9 @@ bool GetSystemInfoVulkanWithICD(SystemInfo *info, vk::ICD preferredICD)
             default:
                 return false;
         }
-        gpu.driverId   = static_cast<DriverID>(driverProperties.driverID);
-        gpu.driverDate = "";
+        gpu.driverId         = static_cast<DriverID>(driverProperties.driverID);
+        gpu.driverApiVersion = properties.apiVersion;
+        gpu.driverDate       = "";
     }
 
     return true;