Revert "Prepare blink to unify definitions of load completion"

LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html

Index: LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html
diff --git a/LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html b/LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html
index ab0bc0c31e97ff7cb205bb45978cc0842929fa89..1fb2be280a4f1f0920fed0913dd945037c11de84 100644
--- a/LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html
+++ b/LayoutTests/webaudio/scriptprocessornode-upmix2-8channel-input.html
@@ -21,11 +21,14 @@ var sourceChannels = 2;
 var inputChannels = 8;
 var outputChannels = 6;
 
-window.jsTestIsAsync = true;
-
 function runTest() {
-    if (window.testRunner)
+    if (window.testRunner) {
         testRunner.dumpAsText();
+        testRunner.waitUntilDone();
+    }
+
+    window.jsTestIsAsync = true;
+
     runJSNodeTest();
 }