UMA metrics for use count of wheel and touch scrolls.

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 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/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <limits>
@@ skipping 1044 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) {
   delegate_->ApplyViewportDeltas(inner_delta, outer_delta,
                                  elastic_overscroll_delta, page_scale,
                                  top_controls_delta);
 }
 
+void RenderWidgetCompositor::RecordWheelAndTouchScrollingCount(
+    bool has_scrolled_by_wheel,
+    bool has_scrolled_by_touch) {
+  delegate_->RecordWheelAndTouchScrollingCount(has_scrolled_by_wheel,
+                                               has_scrolled_by_touch);
+}
+
 void RenderWidgetCompositor::RequestNewCompositorFrameSink() {
   // If the host is closing, then no more compositing is possible.  This
   // prevents shutdown races between handling the close message and
   // the CreateCompositorFrameSink task.
   if (delegate_->IsClosing())
     return;
 
   bool fallback = num_failed_recreate_attempts_ >=
                   COMPOSITOR_FRAME_SINK_RETRIES_BEFORE_FALLBACK;
   delegate_->RequestNewCompositorFrameSink(
@@ skipping 70 matching lines @@
 void RenderWidgetCompositor::SetContentSourceId(uint32_t id) {
   layer_tree_host_->SetContentSourceId(id);
 }
 
 void RenderWidgetCompositor::SetLocalSurfaceId(
     const cc::LocalSurfaceId& local_surface_id) {
   layer_tree_host_->SetLocalSurfaceId(local_surface_id);
 }
 
 }  // namespace content