UMA metrics for use count of wheel and touch scrolls.

third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp

 // Copyright 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 "platform/testing/WebLayerTreeViewImplForTesting.h"
 
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_timeline.h"
 #include "cc/blink/web_layer_impl.h"
@@ skipping 122 matching lines @@
 
 void WebLayerTreeViewImplForTesting::UpdateLayerTreeHost() {}
 
 void WebLayerTreeViewImplForTesting::ApplyViewportDeltas(
     const gfx::Vector2dF& innerDelta,
     const gfx::Vector2dF& outerDelta,
     const gfx::Vector2dF& elasticOverscrollDelta,
     float pageScale,
     float browserControlsDelta) {}
 
+void WebLayerTreeViewImplForTesting::RecordWheelAndTouchScrollingCount(
+    bool hasScrolledByWheel,
+    bool hasScrolledByTouch) {}
+
 void WebLayerTreeViewImplForTesting::RequestNewCompositorFrameSink() {
   // Intentionally do not create and set an CompositorFrameSink.
 }
 
 void WebLayerTreeViewImplForTesting::DidFailToInitializeCompositorFrameSink() {
   ASSERT_NOT_REACHED();
 }
 
 void WebLayerTreeViewImplForTesting::registerViewportLayers(
     const blink::WebLayer* overscrollElasticityLayer,
@@ skipping 47 matching lines @@
 void WebLayerTreeViewImplForTesting::setHaveScrollEventHandlers(
     bool haveEentHandlers) {
   m_layerTreeHost->SetHaveScrollEventHandlers(haveEentHandlers);
 }
 
 bool WebLayerTreeViewImplForTesting::haveScrollEventHandlers() const {
   return m_layerTreeHost->have_scroll_event_handlers();
 }
 
 }  // namespace blink