Pass timeout to RepeatableScrollAction.

tools/telemetry/telemetry/internal/browser/web_contents.py

Index: tools/telemetry/telemetry/internal/browser/web_contents.py
diff --git a/tools/telemetry/telemetry/internal/browser/web_contents.py b/tools/telemetry/telemetry/internal/browser/web_contents.py
index 25f19806a8ce627a3d57865b17d9930bdd951a5c..d360f1d87f49751aea66d6e58b129f55e613a967 100644
--- a/tools/telemetry/telemetry/internal/browser/web_contents.py
+++ b/tools/telemetry/telemetry/internal/browser/web_contents.py
@@ -300,7 +300,8 @@ class WebContents(object):
                               xOverscroll=None, yOverscroll=None,
                               preventFling=True, speed=None,
                               gestureSourceType=None, repeatCount=None,
-                              repeatDelayMs=None, interactionMarkerName=None):
+                              repeatDelayMs=None, interactionMarkerName=None,
+                              timeout=60):
     """Runs an inspector command that causes a repeatable browser driven scroll.
 
     Args:
@@ -327,4 +328,5 @@ class WebContents(object):
         preventFling=preventFling, speed=speed,
         gestureSourceType=gestureSourceType, repeatCount=repeatCount,
         repeatDelayMs=repeatDelayMs,
-        interactionMarkerName=interactionMarkerName)
+        interactionMarkerName=interactionMarkerName,
+        timeout=timeout)