Revert 158076 - Implement blacklist's force GPU capability in dual GPU machines.

content/public/common/gpu_feature_type.h

Index: content/public/common/gpu_feature_type.h
===================================================================
--- content/public/common/gpu_feature_type.h	(revision 158210)
+++ content/public/common/gpu_feature_type.h	(working copy)
@@ -31,6 +31,13 @@
   GPU_FEATURE_TYPE_UNKNOWN = 0
 };
 
+enum GpuSwitchingOption {
+  GPU_SWITCHING_AUTOMATIC,
+  GPU_SWITCHING_FORCE_INTEGRATED,
+  GPU_SWITCHING_FORCE_DISCRETE,
+  GPU_SWITCHING_UNKNOWN
+};
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_GPU_FEATURE_TYPE_H_