Make gpu black list work again on Linux

gpu/config/gpu_switches.cc

Index: gpu/config/gpu_switches.cc
diff --git a/gpu/config/gpu_switches.cc b/gpu/config/gpu_switches.cc
index fdf9f0e180bebd44ce7e5b58e04f4208bfe0820b..afb903a6ca9dec6558c7534329c6fa479d715f7f 100644
--- a/gpu/config/gpu_switches.cc
+++ b/gpu/config/gpu_switches.cc
@@ -9,4 +9,19 @@ namespace switches {
 // Pass a set of GpuDriverBugWorkaroundType ids, seperated by ','.
 const char kGpuDriverBugWorkarounds[] = "gpu-driver-bug-workarounds";
 
+// Override gpu vendor id from the GpuInfoCollector.
+const char kGpuTestingVendorId[] = "gpu-testing-vendor-id";
+
+// Override gpu device id from the GpuInfoCollector.
+const char kGpuTestingDeviceId[] = "gpu-testing-device-id";
+
+// Override gl vendor from the GpuInfoCollector.
+const char kGpuTestingGLVendor[] = "gpu-testing-gl-vendor";
+
+// Override gl renderer from the GpuInfoCollector.
+const char kGpuTestingGLRenderer[] = "gpu-testing-gl-renderer";
+
+// Override gl version from the GpuInfoCollector.
+const char kGpuTestingGLVersion[] = "gpu-testing-gl-version";
+
 }  // namespace switches