testharnessreport: Clear BODY content regardless of existence of <div id=log>

third_party/WebKit/LayoutTests/imported/web-platform-tests/resources/testharnessreport.js

 /*
  * THIS FILE INTENTIONALLY LEFT BLANK
  *
  * More specifically, this file is intended for vendors to implement
  * code needed to integrate testharness.js tests with their own test systems.
  *
  * Typically such integration will attach callbacks when each test is
  * has run, using add_result_callback(callback(test)), or when the whole test file has
  * completed, using add_completion_callback(callback(tests, harness_status)).
  *
@@ skipping 89 matching lines @@
                     sanitize(tests[i].message) + "\n";
             }
         }
         resultStr += "Harness: the test ran to completion.\n";
 
         // Set results element's textContent to the results string.
         results.textContent = resultStr;
 
         function done() {
             if (self.testRunner) {
-                var logDiv = document.getElementById('log');
-                if ((isCSSWGTest() || isJSTest()) && logDiv) {
-                    // Assume it's a CSSWG style test, and anything other than
-                    // the log div isn't material to the testrunner output, so
+                if (isCSSWGTest() || isJSTest()) {
+                    // Anything isn't material to the testrunner output, so
                     // should be hidden from the text dump.
-                    document.body.textContent = '';
+                    if (document.body)
+                        document.body.textContent = '';
                 }
             }
 
             // Add results element to document.
             if (!document.body) {
                 if (!document.documentElement)
                     document.appendChild(document.createElement('html'));
                 document.documentElement.appendChild(document.createElement("body"));
             }
             document.body.appendChild(results);
 
             if (self.testRunner)
                 testRunner.notifyDone();
         }
 
         if (didDispatchLoadEvent || document.readyState != 'loading') {
             // This function might not be the last 'completion callback', and
             // another completion callback might generate more results.  So, we
             // don't dump the results immediately.
             setTimeout(done, 0);
         } else {
             // Parsing the test HTML isn't finished yet.
             window.addEventListener('load', done);
         }
     });
 
 })();