gpu/config: Use angle::GetSystemInfo on Linux

gpu/config/BUILD.gn

Index: gpu/config/BUILD.gn
diff --git a/gpu/config/BUILD.gn b/gpu/config/BUILD.gn
index b579142188dcd66cbfda91f60dbce0f37f097d73..6debe2edbc50d62634476d7e063d6443b74da663 100644
--- a/gpu/config/BUILD.gn
+++ b/gpu/config/BUILD.gn
@@ -6,12 +6,6 @@ import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/ui.gni")
 
-declare_args() {
-  # Use the PCI lib to collect GPU information on Linux.
-  use_libpci = is_linux && (!is_chromecast || is_cast_desktop_build) &&
-               (use_x11 || use_ozone)
-}
-
 group("config") {
   if (is_component_build) {
     public_deps = [
@@ -55,11 +49,8 @@ source_set("config_sources") {
     "gpu_info_collector.h",
     "gpu_info_collector_android.cc",
     "gpu_info_collector_linux.cc",
-    "gpu_info_collector_linux.h",
     "gpu_info_collector_mac.mm",
-    "gpu_info_collector_ozone.cc",
     "gpu_info_collector_win.cc",
-    "gpu_info_collector_x11.cc",
     "gpu_switches.cc",
     "gpu_switches.h",
     "gpu_test_config.cc",
@@ -101,29 +92,13 @@ source_set("config_sources") {
       ]
     }
   }
+  if (is_linux) {
+    deps += [ "//third_party/angle:angle_gpu_info_util" ]
+  }
   if (is_mac) {
     libs = [
       "IOKit.framework",
       "CoreFoundation.framework",
     ]
   }
-  if (use_libpci) {
-    defines = [ "USE_LIBPCI=1" ]
-    deps += [ "//build/linux/libpci" ]
-  }
-  if (is_linux && use_x11) {
-    configs += [
-      "//build/config/linux:x11",
-      "//build/config/linux:xext",
-    ]
-    deps += [
-      "//third_party/libXNVCtrl",
-      "//ui/gfx/x",
-    ]
-  } else {
-    sources -= [ "gpu_info_collector_x11.cc" ]
-  }
-  if (!use_ozone) {
-    sources -= [ "gpu_info_collector_ozone.cc" ]
-  }
 }