gpu: Introduce GpuInit.

gpu/config/gpu_switches.h

Index: gpu/config/gpu_switches.h
diff --git a/gpu/config/gpu_switches.h b/gpu/config/gpu_switches.h
index b3501b0505beeb9c1aec2aec1073fd597adcb1df..77de6e0fb44991cd65a3b31c2a255afd0edb3dd5 100644
--- a/gpu/config/gpu_switches.h
+++ b/gpu/config/gpu_switches.h
@@ -9,9 +9,13 @@
 
 namespace switches {
 
-GPU_EXPORT extern const char kGpuDriverBugWorkarounds[];
 GPU_EXPORT extern const char kGpuActiveVendorID[];
 GPU_EXPORT extern const char kGpuActiveDeviceID[];
+GPU_EXPORT extern const char kGpuDeviceID[];
+GPU_EXPORT extern const char kGpuDriverBugWorkarounds[];
+GPU_EXPORT extern const char kGpuDriverVendor[];
+GPU_EXPORT extern const char kGpuDriverVersion[];
+GPU_EXPORT extern const char kGpuDriverDate[];
 GPU_EXPORT extern const char kGpuSecondaryVendorIDs[];
 GPU_EXPORT extern const char kGpuSecondaryDeviceIDs[];
 GPU_EXPORT extern const char kGpuTestingNoCompleteInfoCollection[];
@@ -24,6 +28,7 @@ GPU_EXPORT extern const char kGpuTestingDriverDate[];
 GPU_EXPORT extern const char kGpuTestingGLVendor[];
 GPU_EXPORT extern const char kGpuTestingGLRenderer[];
 GPU_EXPORT extern const char kGpuTestingGLVersion[];
+GPU_EXPORT extern const char kGpuVendorID[];
 
 }  // namespace switches