UMA metrics for use count of wheel and touch scrolls.

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 846 matching lines @@
     const gfx::Vector2dF& inner_delta,
     const gfx::Vector2dF& outer_delta,
     const gfx::Vector2dF& elastic_overscroll_delta,
     float page_scale,
     float top_controls_delta) {
   GetWebWidget()->applyViewportDeltas(inner_delta, outer_delta,
                                       elastic_overscroll_delta, page_scale,
                                       top_controls_delta);
 }
 
+void RenderWidget::RecordWheelAndTouchScrollingCount(
+    bool has_scrolled_by_wheel,
+    bool has_scrolled_by_touch) {
+  GetWebWidget()->recordWheelAndTouchScrollingCount(has_scrolled_by_wheel,
+                                                    has_scrolled_by_touch);
+}
+
 void RenderWidget::BeginMainFrame(double frame_time_sec) {
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
   // render_thread may be NULL in tests.
   InputHandlerManager* input_handler_manager =
       render_thread ? render_thread->input_handler_manager() : NULL;
   if (input_handler_manager)
     input_handler_manager->ProcessRafAlignedInputOnMainThread(
         routing_id_, ui::EventTimeStampFromSeconds(frame_time_sec));
 
   GetWebWidget()->beginFrame(frame_time_sec);
@@ skipping 1448 matching lines @@
     // browser side (https://crbug.com/669219).
     // If there is no WebFrameWidget, then there will be no
     // InputMethodControllers for a WebLocalFrame.
     return nullptr;
   }
   return static_cast<blink::WebFrameWidget*>(GetWebWidget())
       ->getActiveWebInputMethodController();
 }
 
 }  // namespace content