Revert unfinished work of "full-frame-measurement"

third_party/WebKit/PerformanceTests/resources/runner.js

 // There are tests for computeStatistics() located in LayoutTests/fast/harness/perftests
 
 if (window.testRunner) {
     testRunner.waitUntilDone();
     testRunner.dumpAsText();
 }
 
 (function () {
     var logLines = null;
     var completedIterations = -1;
@@ skipping 119 matching lines @@
             logLines.push(text);
         else
             logInDocument(text);
     }
 
     PerfTestRunner.logFatalError = function (text) {
         PerfTestRunner.log(text);
         finish();
     }
 
-    // Force a layout (including style recalc) if window.fullFrameMeasurement is false,
-    // or a full frame update (including style recalc, layout, compositing update and paint invalidation,
-    // not including painting).
-    PerfTestRunner.forceLayoutOrFullFrame = function(doc) {
+    PerfTestRunner.forceLayout = function(doc) {
         doc = doc || document;
-        // Forcing full frame is only feasible when window.internals is available.
-        if (window.fullFrameMeasurement) {
-            if (window.internals)
-                internals.forceCompositingUpdate(doc);
-            else
-                PerfTestRunner.logFatalError('window.internals API is required for full frame measurement.');
-            return;
-        }
-
-        // Otherwise just force style recalc and layout without compositing update and paint invalidation.
         if (doc.body)
             doc.body.offsetHeight;
         else if (doc.documentElement)
             doc.documentElement.offsetHeight;
     };
 
     function start(test, runner) {
         if (!test) {
             PerfTestRunner.logFatalError("Got a bad test object.");
             return;
@@ skipping 162 matching lines @@
             var iframe = document.createElement("iframe");
             document.body.appendChild(iframe);
 
             iframe.sandbox = '';  // Prevent external loads which could cause write() to return before completing the parse.
             iframe.style.width = "600px"; // Have a reasonable size so we're not line-breaking on every character.
             iframe.style.height = "800px";
             iframe.contentDocument.open();
 
             for (var chunkIndex = 0; chunkIndex < chunks.length; chunkIndex++) {
                 iframe.contentDocument.write(chunks[chunkIndex]);
-                PerfTestRunner.forceLayoutOrFullFrame(iframe.contentDocument);
+                PerfTestRunner.forceLayout(iframe.contentDocument);
             }
 
             iframe.contentDocument.close();
             document.body.removeChild(iframe);
         };
 
         PerfTestRunner.measureTime(test);
     }
 
     window.PerfTestRunner = PerfTestRunner;
 })();