Workaround for Intel 6xxx clear to 0/1 bug

gpu/config/gpu_driver_bug_list.json

Index: gpu/config/gpu_driver_bug_list.json
diff --git a/gpu/config/gpu_driver_bug_list.json b/gpu/config/gpu_driver_bug_list.json
index 82d53f12c291429402bbd2bb242f5f781994efbc..d7512e646d587991334851abc732569c260f5478 100644
--- a/gpu/config/gpu_driver_bug_list.json
+++ b/gpu/config/gpu_driver_bug_list.json
@@ -1,6 +1,6 @@
 {
   "name": "gpu driver bug list",
-  "version": "10.14",
+  "version": "10.15",
   "entries": [
     {
       "id": 1,
@@ -2510,7 +2510,7 @@
       ]
     },
     {
-      "id": 232,
+      "id": 231,

[Zhenyao Mo, 2017/06/19 21:47:20]

Don't do that even if we skip one ID.  That will mess up histograms etc.  There
might be a deleted entry.

[jiajia.qin, 2017/06/20 04:22:45]

Acknowledged.

       "description": "Delayed copy NV12 crashes on Intel on Windows <= 8.1.",
       "cr_bugs": [727216],
       "os": {
@@ -2526,7 +2526,7 @@
       ]
     },
     {
-      "id": 233,
+      "id": 232,

[Zhenyao Mo, 2017/06/19 21:47:20]

Same here. Don't change it.

[jiajia.qin, 2017/06/20 04:22:45]

Acknowledged.

       "description": "Delayed copy NV12 displays incorrect colors on NVIDIA drivers.",
       "cr_bugs": [728670],
       "os": {
@@ -2536,6 +2536,23 @@
       "features": [
         "disable_delayed_copy_nv12"
       ]
+    },
+    {
+      "id": 233,

[Zhenyao Mo, 2017/06/19 21:47:20]

234 or whatever the latest + 1

[jiajia.qin, 2017/06/20 04:22:45]

Acknowledged.

+      "description": "glClearColor does not always work on Intel 6xxx Mac drivers",
+      "cr_bugs": [710443],
+      "os": {
+        "type": "macosx",
+        "version": {
+          "op": "<=",
+          "value": "10.12.4"

[Zhenyao Mo, 2017/06/19 21:47:20]

Are you sure it's fixed in 10.12.5? If not, that's not add a version qualifier. 
Wait until a fix is released and then update this entry.

[jiajia.qin, 2017/06/20 04:22:45]

I verified that it has been fixed in 10.12.6.

+        }
+      },
+      "vendor_id": "0x8086",
+      "device_id": ["0x1626", "0x162B", "0x1622"],
+      "features": [
+        "clear_to_boundary_values_is_broken"
+      ]
     }
   ],
   "comment": [