Disable accelerated 2d canvas on Windows where perf.overall < 3.5

gpu/software_rendering_list/software_rendering_list.json

Index: gpu/software_rendering_list/software_rendering_list.json
===================================================================
--- gpu/software_rendering_list/software_rendering_list.json	(revision 125255)
+++ gpu/software_rendering_list/software_rendering_list.json	(working copy)
@@ -26,18 +26,21 @@
 //    The version is interpreted as "year.month.day".
 // 8. "gl_vendor" is a STRING structure (defined below).
 // 9. "gl_renderer" is a STRING structure (defined below).
-// 10: "exceptions" is a list of entries.
-// 11. "blacklist" is a list of gpu feature strings, valid values include
+// 10. "perf_graphics" is a FLOAT structure (defined below).
+// 11. "perf_gaming" is a FLOAT structure (defined below).
+// 12. "perf_overall" is a FLOAT structure (defined below).
+// 13. "exceptions" is a list of entries.
+// 14. "blacklist" is a list of gpu feature strings, valid values include
 //     "accelerated_2d_canvas", "accelerated_compositing", "webgl",
 //     "multisampling", and "all".
 //     This field is mandatory.
-// 12. "description" has the description of the entry.
-// 13. "webkit_bugs" is an array of associated webkit bug numbers.
-// 14. "cr_bugs" is an array of associated webkit bug numbers.
-// 15. "browser_version" is a VERSION structure (defined below).  If this
+// 15. "description" has the description of the entry.
+// 16. "webkit_bugs" is an array of associated webkit bug numbers.
+// 17. "cr_bugs" is an array of associated webkit bug numbers.
+// 18. "browser_version" is a VERSION structure (defined below).  If this
 //     condition is not satisfied, the entry will be ignored.  If it is not
 //     present, then the entry applies to all versions of the browser.
-// 16. "disabled" is a boolean. If it is present, the entry will be skipped.
+// 19. "disabled" is a boolean. If it is present, the entry will be skipped.
 //     This can not be used in exceptions.
 //
 // VERSION includes "op" "number", and "number2".  "op" can be any of the
@@ -47,6 +50,11 @@
 //
 // STRING includes "op" and "value".  "op" can be any of the following values:
 // "contains", "beginwith", "endwith", "=".  "value" is a string.
+//
+// FLOAT includes "op" "number", and "number2".  "op" can be any of the
+// following values: "=", "<", "<=", ">", ">=", "any", "between".  "number2" is
+// only used if "op" is "between".  "number" is used for all "op" values except
+// "any". "number" and "number2" are valid float numbers.
 
 {
   "name": "software rendering list",
@@ -475,6 +483,21 @@
       "blacklist": [
         "all"
       ]
+    },
+    {
+      "id": 32,
+      "description": "Accelerated 2d canvas is disabled on Windows systems with low perf stats.",
+      "cr_bugs": [116350],
+      "os": {
+        "type": "win"
+      },
+      "perf_overall": {
+        "op": "<",
+        "number": "3.5"
+      },
+      "blacklist": [
+        "accelerated_2d_canvas"
+      ]
     }
   ]
 }