Added GPU driver workaround for OSX multimonitor multisampling disabling

gpu/config/gpu_driver_bug_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 a certain driver bug exists in the current system.
 // A valid gpu_driver_bug_list.json file are in the format of
 // {
 //   "version": "x.y",
 //   "entries": [
 //     { // entry 1
@@ skipping 67 matching lines @@
 
 #define LONG_STRING_CONST(...) #__VA_ARGS__
 
 namespace gpu {
 
 const char kGpuDriverBugListJson[] = LONG_STRING_CONST(
 
 {
   "name": "gpu driver bug list",
   // Please update the version number whenever you change this file.
-  "version": "2.7",
+  "version": "2.8",
   "entries": [
     {
       "id": 1,
       "description": "Imagination driver doesn't like uploading lots of buffer data constantly",
       "os": {
         "type": "android"
       },
       "gl_vendor": {
         "op": "beginwith",
         "value": "Imagination"
@@ skipping 345 matching lines @@
       "os": {
         "type": "android"
       },
       "gl_vendor": {
         "op": "beginwith",
         "value": "Qualcomm"
       },
       "features": [
         "disable_async_readpixels"
       ]
+    },
+    {
+      "id": 30,
+      "cr_bugs": [237931],
+      "description": "Multisampling is buggy on OSX when multiple monitors are connected",
+      "os": {
+        "type": "macosx"
+      },
+      "features": [
+        "disable_multimonitor_multisampling"
+      ]
     }
   ]
 }
 
 );  // LONG_STRING_CONST macro
 
 }  // namespace gpu