Bug 1641160 - add support for isCoverageBuild in reftests. r=gbrown

add support for isCoverageBuild in reftests.

Differential Revision: https://phabricator.services.mozilla.com/D77139

layout/tools/reftest/globals.jsm

@@ -69,6 +69,7 @@ for (let [key, val] of Object.entries({
     contentGfxInfo: null,
     focusFilterMode: "all",
     compareRetainedDisplayLists: false,
+    isCoverageBuild: false,
 
     browser: undefined,
     // Are we testing web content loaded in a separate process?

layout/tools/reftest/manifest.jsm

@@ -441,6 +441,7 @@ function BuildConditionSandbox(aURL) {
     var xr = Cc[NS_XREAPPINFO_CONTRACTID].getService(Ci.nsIXULRuntime);
     var appInfo = Cc[NS_XREAPPINFO_CONTRACTID].getService(Ci.nsIXULAppInfo);
     sandbox.isDebugBuild = g.debug.isDebugBuild;
+    sandbox.isCoverageBuild = g.isCoverageBuild;
     var prefs = Cc["@mozilla.org/preferences-service;1"].
                 getService(Ci.nsIPrefBranch);
     var env = Cc["@mozilla.org/process/environment;1"].

layout/tools/reftest/reftest.jsm

@@ -281,6 +281,10 @@ function InitAndStartRefTests()
         g.focusFilterMode = prefs.getStringPref("reftest.focusFilterMode");
     } catch(e) {}
 
+    try {
+        g.isCoverageBuild = prefs.getBoolPref("reftest.isCoverageBuild");
+    } catch(e) {}
+
     try {
         g.compareRetainedDisplayLists = prefs.getBoolPref("reftest.compareRetainedDisplayLists");
     } catch (e) {}

layout/tools/reftest/runreftest.py

@@ -395,6 +395,7 @@ class RefTest(object):
         prefs['gfx.font_rendering.ahem_antialias_none'] = True
         # Disable dark scrollbars because it's semi-transparent.
         prefs['widget.disable-dark-scrollbar'] = True
+        prefs['reftest.isCoverageBuild'] = mozinfo.info.get('ccov', False)
 
         # Set tests to run or manifests to parse.
         if tests: