Replace old with new synthetic gesture framework.

tools/telemetry/telemetry/page/actions/scroll.js

Index: tools/telemetry/telemetry/page/actions/scroll.js
diff --git a/tools/telemetry/telemetry/page/actions/scroll.js b/tools/telemetry/telemetry/page/actions/scroll.js
index e68d91a12597311e0b4b3d7192d8f38fc72a1375..218fae05161fe629e663c510bf7e6a2208771338 100644
--- a/tools/telemetry/telemetry/page/actions/scroll.js
+++ b/tools/telemetry/telemetry/page/actions/scroll.js
@@ -16,10 +16,12 @@
       this.element_ = opt_options.element;
       this.left_start_percentage_ = opt_options.left_start_percentage;
       this.top_start_percentage_ = opt_options.top_start_percentage;
+      this.gesture_source_type = opt_options.gesture_source_type;
     } else {
       this.element_ = document.body;
       this.left_start_percentage_ = 0.5;
       this.top_start_percentage_ = 0.5;
+      this.gesture_source_type = chrome.gpuBenchmarking.DEFAULT_INPUT;
     }
   }
 
@@ -73,7 +75,7 @@
         rect.top + rect.height * this.options_.top_start_percentage_;
     chrome.gpuBenchmarking.smoothScrollBy(distance, function() {
       callback();
-    }, start_left, start_top);
+    }, start_left, start_top, this.options_.gesture_source_type);
   };
 
   // This class scrolls a page from the top to the bottom once.