gpu: Enable CMAA for all Braswell, Broadwell and Skylake ChromeOS devices

gpu/config/gpu_driver_bug_list_json.cc

Index: gpu/config/gpu_driver_bug_list_json.cc
diff --git a/gpu/config/gpu_driver_bug_list_json.cc b/gpu/config/gpu_driver_bug_list_json.cc
index bf190ddd88408f0a734eaf24d1a2cc335c107709..1f2ebc12e1d8fd5069a71f2957b62b94974c44de 100644
--- a/gpu/config/gpu_driver_bug_list_json.cc
+++ b/gpu/config/gpu_driver_bug_list_json.cc
@@ -19,7 +19,7 @@ const char kGpuDriverBugListJson[] = LONG_STRING_CONST(
 {
   "name": "gpu driver bug list",
   // Please update the version number whenever you change this file.
-  "version": "9.04",
+  "version": "9.05",
   "entries": [
     {
       "id": 1,
@@ -1786,11 +1786,14 @@ LONG_STRING_CONST(
             "type" : "chromeos"
           },
           "vendor_id": "0x8086",
-          "device_id": ["0x1602", "0x1606", "0x160a", "0x160b", "0x160d",
-                        "0x160e", "0x1612", "0x1616", "0x161a", "0x161b",
-                        "0x161d", "0x161e", "0x1622", "0x1626", "0x162a",
-                        "0x162b", "0x162d", "0x162e", "0x22b0", "0x22b1",
-                        "0x22b2", "0x22b3"]
+          "driver_vendor": "Mesa",
+          "gl_vendor": "Intel.*",
+          "gl_renderer": ".*Intel.*(Braswell|Broadwell|Skylake).*",

[Ken Russell (switch to Gerrit), 2016/10/07 02:10:21]

Have you tested this? There are bootstrapping problems with basing blacklist
entries on the GL_VENDOR and GL_RENDERER strings on some platforms (though none
affected by this blacklist entry -- basically macOS).

[adrian.belgun, 2016/10/07 06:22:35]

This was tested on a Broadwell Linux device and it functions as expected:
- stock: no cmaa (os is linux)
- with the "os" field commented: no cmaa (linux used opengl not opengl es)
- with the "os" field commented and the "-use-gl=egl" flag: cmaa works
- with the "os" field commented, the "-use-gl=egl" flag and "Broadwell" removed
from the regexp: no cmaa

At this point we're targeting enablement on Gen8(1) hardware and above on
ChromeOS and possibly Linux in the future. Thus we're only looking at Mesa as
driver back-end. 

On Mesa the the gl_render(2) names are consistently defined from the pci_ids.

I'm planning to land this once the rest of the testing is done.
I will be doing additional testing on falco (cmaa should not be enabled), cyan
(cmaa should work) and on lulu (cmaa should work).

Regarding MacOS, no testing was done at this point in time, but we're currently
filtering on os == chromeos, so it should not be affected.

1: https://en.wikipedia.org/wiki/Intel_HD_and_Iris_Graphics#Capabilities
2: https://cgit.freedesktop.org/mesa/mesa/tree/include/pci_ids/i965_pci_ids.h

+          "gl_type": "gles",
+          "gl_version": {
+            "op": ">=",
+            "value": "3.1"
+          }
         }
       ],
       "features": [