Revert of content gpu refactor: get rid of gpu related content switches.

gpu/command_buffer/service/gpu_preferences.h

Index: gpu/command_buffer/service/gpu_preferences.h
diff --git a/gpu/command_buffer/service/gpu_preferences.h b/gpu/command_buffer/service/gpu_preferences.h
index 69b43e112f9eab6b58eade3a89e29c9e214ad375..2721e272aab36002e4a51cefb66082097465f672 100644
--- a/gpu/command_buffer/service/gpu_preferences.h
+++ b/gpu/command_buffer/service/gpu_preferences.h
@@ -31,24 +31,6 @@
 
   // Prioritizes the UI's command stream in the GPU process.
   bool ui_prioritize_in_gpu_process = false;
-
-  // Disables hardware acceleration of video decode, where available.
-  bool disable_accelerated_video_decode = false;
-
-#if defined(OS_CHROMEOS)
-  // Disables VA-API accelerated video encode.
-  bool disable_vaapi_accelerated_video_encode = false;
-#endif
-
-#if defined(ENABLE_WEBRTC)
-  // Disables HW encode acceleration for WebRTC.
-  bool disable_web_rtc_hw_encoding = false;
-#endif
-
-#if defined(OS_WIN)
-  // Enables experimental hardware acceleration for VP8/VP9 video decoding.
-  bool enable_accelerated_vpx_decode = false;
-#endif
 
   // ===================================
   // Settings from //gpu/command_buffer/service/gpu_switches.cc