Revert unfinished work of "full-frame-measurement"

third_party/WebKit/PerformanceTests/resources/runner.js

Index: third_party/WebKit/PerformanceTests/resources/runner.js
diff --git a/third_party/WebKit/PerformanceTests/resources/runner.js b/third_party/WebKit/PerformanceTests/resources/runner.js
index 11a063625875bcbc36b1d3bc5da33cf42924a6a0..ff74d8dc00969ca831da38fdb4c1788301c4e212 100644
--- a/third_party/WebKit/PerformanceTests/resources/runner.js
+++ b/third_party/WebKit/PerformanceTests/resources/runner.js
@@ -137,21 +137,8 @@ if (window.testRunner) {
         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)
@@ -334,7 +321,7 @@ if (window.testRunner) {
 
             for (var chunkIndex = 0; chunkIndex < chunks.length; chunkIndex++) {
                 iframe.contentDocument.write(chunks[chunkIndex]);
-                PerfTestRunner.forceLayoutOrFullFrame(iframe.contentDocument);
+                PerfTestRunner.forceLayout(iframe.contentDocument);
             }
 
             iframe.contentDocument.close();