Enforce FCM settings via the blacklist rather than in-code version checks.

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 912 matching lines @@
         "version": {
           "op": "<",
           "value": "6.1"
         }
       },
       "features": [
         "accelerated_video_decode"
       ]
     },
     {
-      "id": 65,
-      "description": "Force compositing mode is unstable in Win Vista.",
-      "cr_bugs": [170421],
-      "os": {
-        "type": "win",
-        "version": {
-          "op": "=",
-          "value": "6.0"
-        }
-      },
-      "features": [
-        "flash_3d",
-        "flash_stage3d",
-        "force_compositing_mode"
-      ]
-    },
-    {
       "id": 66,
       "description": "Force compositing mode is unstable in MacOSX earlier than 10.8.",
       "cr_bugs": [174101],
       "os": {
         "type": "macosx",
         "version": {
           "op": "<",
           "value": "10.8"
         }
       },
@@ skipping 190 matching lines @@
         "op": "between",
         "value": "8.15.10.1883",
         "value2": "8.15.10.2702"
       },
       "features": [
         "accelerated_video_decode"
       ]
     },
     {
       "id": 79,
-      "description": "Disable force compositing mode on all Windows versions prior to Vista.",
-      "cr_bugs": [273920],
+      "description": "Disable force compositing mode on all Windows versions prior to and including Vista.",
+      "cr_bugs": [273920, 170421],
       "os": {
         "type": "win",
         "version": {
-          "op": "<",
+          "op": "<=",
           "value": "6.0"
         }
       },
       "features": [
+        "flash_3d",
+        "flash_stage3d",
         "force_compositing_mode"
       ]
     }
   ]
 }
 
 );  // LONG_STRING_CONST macro
 
 }  // namespace gpu