Add an acceleration test for Advanced Layers on Windows. (bug 1365879 part 25, r=milan)

--HG--
extra : rebase_source : 4f8844321fa74328c4c18bc1ba1abaaa56882df9

gfx/tests/mochitest/test_acceleration.html

@@ -31,6 +31,7 @@ var xr = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULRuntime);
 var windows = SpecialPowers.Services.ww.getWindowEnumerator();
 var windowutils;
 var acceleratedWindows = 0;
+var advancedLayersWindows = 0;
 while (windows.hasMoreElements()) {
   windowutils = windows.getNext().QueryInterface(Ci.nsIInterfaceRequestor)
                                  .getInterface(Ci.nsIDOMWindowUtils);
@@ -38,6 +39,9 @@ while (windows.hasMoreElements()) {
     if (windowutils.layerManagerType != "Basic") {
       acceleratedWindows++;
     }
+    if (windowutils.usingAdvancedLayers) {
+      advancedLayersWindows++;
+    }
   } catch (e) {
     // The window may not have a layer manager, in which case we get an error.
     // Don't count it as an accelerated window.
@@ -77,6 +81,7 @@ switch(osName)
           todo(false, "Acceleration not supported on Windows XP or newer" +
                       " (This is expected on SeaMonkey (tinderboxes).)");
           break;
+
         }
       }
 
@@ -91,6 +96,22 @@ switch(osName)
       ok(gfxInfo.D2DEnabled, "Direct2D enabled on Windows 8 or newer");
       ok(gfxInfo.DWriteEnabled, "DirectWrite enabled on Windows 8 or newer");
     }
+
+    var advancedLayersEnabled = false;
+    var advancedLayersEnabledOnWin7 = false;
+    try {
+      advancedLayersEnabled = SpecialPowers.getBoolPref("layers.mlgpu.dev-enabled");
+      advancedLayersEnabledOnWin7 = SpecialPowers.getBoolPref("layers.mlgpu.enable-on-windows7");
+    } catch (e) {}
+    var shouldGetAL = advancedLayersEnabled;
+    if (version < 6.2) {
+      shouldGetAL &= advancedLayersEnabledOnWin7;
+    }
+    if (shouldGetAL) {
+      isnot(advancedLayersWindows, 0, "Advanced Layers enabled on Windows");
+    } else {
+      is(advancedLayersWindows, 0, "Advanced Layers disabled on Windows");
+    }
     break;
 
   case "Linux":