Make gpuBenchmarking.smoothDrag or smoothScrollBy scroll properly in pointer event tests

third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js

Index: third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js b/third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js
index d972b5a3f8dad5862a0c318738862da4462c6140..b1d4bb6c280546cecba56d871b30a73108bafec1 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js
+++ b/third_party/WebKit/LayoutTests/imported/wpt_automation/pointerevents/pointerevent_touch-action-table-test_touch-manual-automation.js
@@ -1,8 +1,22 @@
 importAutomationScript('/pointerevents/pointerevent_common_input.js');
 
-function inject_input() {
-  touchScrollUpInTarget('target0');
-  touchScrollLeftInTarget('target0');
-  touchTapInTarget('btnComplete');
+function callback_function() {
+  window.setTimeout(function() {
+    touchTapInTarget('btnComplete');}
+    , 2 * scrollReturnInterval);
 }
 
+function inject_input() {
+  touchScrollUpInTarget('row1');
+  window.setTimeout(function() {
+    touchScrollLeftInTarget('row1');
+    } , 2*scrollReturnInterval);
+
+  window.setTimeout(function() {
+    touchScrollUpInTarget('cell3');
+    } , 2*scrollReturnInterval);
+
+  window.setTimeout(function() {
+    touchScrollLeftInTarget('cell3', callback_function);
+    } , 2*scrollReturnInterval);
+}