Remove dead code for gpu blacklist auto-update.

content/browser/gpu/gpu_data_manager.h

Index: content/browser/gpu/gpu_data_manager.h
===================================================================
--- content/browser/gpu/gpu_data_manager.h	(revision 112878)
+++ content/browser/gpu/gpu_data_manager.h	(working copy)
@@ -114,14 +114,8 @@
 
   // Gives ownership of the built-in blacklist.  This is always called on the
   // UI thread.
-  void SetBuiltInGpuBlacklist(GpuBlacklist* built_in_list);
+  void SetGpuBlacklist(GpuBlacklist* gpu_blacklist);
 
-  // Gives ownership of the latest blacklist.  This is always called on the UI
-  // thread.
-  // TODO(zmo): Get rid of preliminary because it should not be exposed to
-  // outside GpuDataManager.
-  void UpdateGpuBlacklist(GpuBlacklist* updated_list, bool preliminary);
-
   // This gets called when switching GPU might have happened.
   void HandleGpuSwitch();