[GPU Workaround] Re-enable disable_chromium_framebuffer_multisample on Nexus 7g2 and alike

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 1477 matching lines @@
                     "0x0df2", "0x0df3", "0x0df4", "0x0df5", "0x0df6", "0x0df7",
                     "0x0df8", "0x0df9", "0x0dfa", "0x0dfc", "0x0f00", "0x0f01",
                     "0x1080", "0x1081", "0x1082", "0x1084", "0x1086", "0x1087",
                     "0x1088", "0x1089", "0x108b", "0x1091", "0x109a", "0x109b",
                     "0x1040", "0x1042", "0x1048", "0x1049", "0x104a", "0x1050",
                     "0x1051", "0x1052", "0x1054", "0x1055", "0x1056", "0x1057",
                     "0x1058", "0x1059", "0x105a", "0x107d", "0x1140"],
       "features": [
         "gpu_rasterization"
       ]
+    },
+    {
+      // Corresponds to GPU driver bug #214.
+      "id": 140,
+      "description": "Some old Qualcomm scissor bug workaround needs disabling MSAA to work, which is a core part of WebGL 2.",
+      "cr_bugs": [670607, 696627, 698197],
+      "gl_vendor": "Qualcomm.*",
+      "machine_model_name": ["Nexus 7", "KFTHWI", "KFSAWI", "KFAPWI", "KFTHWA", "KFSAWA", "KFAPWA"],
+      "features": [
+        "webgl2"
+      ]
     }
   ]
 }
 
 );  // LONG_STRING_CONST macro
 
 }  // namespace gpu