[chromedriver] Prevent touch_action_tests.html from reflowing during gestures.

chrome/test/data/chromedriver/touch_action_tests.html

Index: chrome/test/data/chromedriver/touch_action_tests.html
diff --git a/chrome/test/data/chromedriver/touch_action_tests.html b/chrome/test/data/chromedriver/touch_action_tests.html
index f058e61b9c7e252457281a80cedca6882e40d400..95c89f5dd0ca5dd3600e171bb29724d7d46b63c6 100644
--- a/chrome/test/data/chromedriver/touch_action_tests.html
+++ b/chrome/test/data/chromedriver/touch_action_tests.html
@@ -9,7 +9,9 @@
     <div id="target">
       Events are logged when tests touch this div.
     </div>
-    <div id="events">events: </div>
+    <!-- use "white-space:nowrap;" to prevent page reflows while swiping, see
+    https://bugs.chromium.org/p/chromedriver/issues/detail?id=1508 -->
+    <div id="events" style="white-space:nowrap;">events: </div>
     <div id="padding">
       We need some padding here so that the page is large enough to test swipe
       and scroll actions.