Add plumbing for two gpu workarounds, soon to be used by DrawingBuffer.

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.
 // The format of a valid gpu_driver_bug_list.json file is defined in
 // <gpu/config/gpu_control_list_format.txt>.
 // The supported "features" can be found in
 // <gpu/config/gpu_driver_bug_workaround_type.h>.
 
 #include "gpu/config/gpu_control_list_jsons.h"
 
 #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": "8.63",
+  "version": "8.64",
   "entries": [
     {
       "id": 1,
       "description": "Imagination driver doesn't like uploading lots of buffer data constantly",
       "os": {
         "type": "android"
       },
       "gl_vendor": "Imagination.*",
       "features": [
         "use_client_side_arrays_for_stream_buffers"
@@ skipping 1928 matching lines @@
       },
       "gl_vendor": "NVIDIA.*",
       "gl_type": "gles",
       "gl_version": {
         "op": ">=",
         "value": "3.0"
       },
       "features": [
         "disable_discard_framebuffer"
       ]
+    },
+    {
+      "id": 163,
+      "cr_bugs": [607130],
+      "description": "Multisample renderbuffers with format GL_RGB8 have performance issues on Intel GPUs.",
+      "os": {
+        "type": "macosx"
+      },
+      "vendor_id": "0x8086",
+      "features": [
+        "disable_webgl_rgb_multisampling_usage"
+      ]
+    },
+    {
+      "id": 164,
+      "cr_bugs": [595948],
+      "description": "glColorMask does not work for multisample renderbuffers on old AMD GPUs.",
+      "os": {
+        "type": "macosx"
+      },
+      "vendor_id": "0x1002",
+      "device_id": ["0x68b8"],
+      "features": [
+        "disable_webgl_multisampling_color_mask_usage"
+      ]
     }
   ]
 }
 
 );  // LONG_STRING_CONST macro
 
 }  // namespace gpu