Enable VAAPI accelerated decode on Linux

gpu/config/software_rendering_list_json.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Determines whether certain gpu-related features are blacklisted or not.
 // The format of a valid software_rendering_list.json file is defined in
 // <gpu/config/gpu_control_list_format.txt>.
 // The supported "features" can be found in <gpu/config/gpu_blacklist.cc>.
 
 #include "gpu/config/gpu_control_list_jsons.h"
@@ skipping 466 matching lines @@
       "driver_vendor": "NVIDIA",
       "driver_version": {
         "op": "<",
         "value": "295"
       },
       "features": [
         "all"
       ]
     },
     {
-      "id": 48,
-      "description": "Accelerated video decode is unavailable on Linux",
-      "cr_bugs": [137247],
-      "os": {
-        "type": "linux"
-      },
-      "features": [
-        "accelerated_video_decode"
-      ]
-    },
-    {
       "id": 49,
       "description": "NVidia GeForce GT 650M can cause the system to hang with flash 3D",
       "cr_bugs": [140175],
       "os": {
         "type": "macosx",
         "version": {
           "op": "between",
           "value": "10.8.0",
           "value2": "10.8.1"
         }
@@ skipping 704 matching lines @@
       "features": [
         "accelerated_video_decode"
       ]
     }
   ]
 }
 
 );  // LONG_STRING_CONST macro
 
 }  // namespace gpu