[Code health] Delete some deadcode for DidOverscroll

This CL doesn't change behavior, it deletes some dead code.

Bug: None
Change-Id: Ic917e76b8dc5545cc7bfc7b39887c4ea859009bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2167107
Auto-Submit: Xida Chen <xidachen@chromium.org>
Commit-Queue: Navid Zolghadr <nzolghadr@chromium.org>
Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762830}

content/renderer/input/widget_input_handler_manager.cc

@@ -244,24 +244,6 @@ void WidgetInputHandlerManager::FindScrollTargetOnMainThread(
       FROM_HERE, base::BindOnce(std::move(callback), element_id));
 }
 
-void WidgetInputHandlerManager::DidOverscroll(
-    const gfx::Vector2dF& accumulated_overscroll,
-    const gfx::Vector2dF& latest_overscroll_delta,
-    const gfx::Vector2dF& current_fling_velocity,
-    const gfx::PointF& causal_event_viewport_point,
-    const cc::OverscrollBehavior& overscroll_behavior) {
-  mojom::WidgetInputHandlerHost* host = GetWidgetInputHandlerHost();
-  if (!host)
-    return;
-  ui::DidOverscrollParams params;
-  params.accumulated_overscroll = accumulated_overscroll;
-  params.latest_overscroll_delta = latest_overscroll_delta;
-  params.current_fling_velocity = current_fling_velocity;
-  params.causal_event_viewport_point = causal_event_viewport_point;
-  params.overscroll_behavior = overscroll_behavior;
-  host->DidOverscroll(params);
-}
-
 void WidgetInputHandlerManager::DidAnimateForInput() {
   main_thread_scheduler_->DidAnimateForInputOnCompositorThread();
 }

content/renderer/input/widget_input_handler_manager.h

@@ -81,12 +81,6 @@ class CONTENT_EXPORT WidgetInputHandlerManager final
       const ui::LatencyInfo& latency_info,
       const blink::WebInputEventAttribution& attribution) override;
 
-  void DidOverscroll(
-      const gfx::Vector2dF& accumulated_overscroll,
-      const gfx::Vector2dF& latest_overscroll_delta,
-      const gfx::Vector2dF& current_fling_velocity,
-      const gfx::PointF& causal_event_viewport_point,
-      const cc::OverscrollBehavior& overscroll_behavior) override;
   void DidAnimateForInput() override;
   void DidStartScrollingViewport() override;
   void GenerateScrollBeginAndSendToMainThread(

ui/events/blink/input_handler_proxy_client.h

@@ -23,16 +23,6 @@ class InputHandlerProxyClient {
       const ui::LatencyInfo& latency_info,
       const blink::WebInputEventAttribution& attribution) = 0;
 
-  // |HandleInputEventWithLatencyInfo/RouteToTypeSpecificHandler| will respond
-  // to overscroll by calling the passed in callback. Otherwise |DidOverscroll|
-  // will be fired.
-  virtual void DidOverscroll(
-      const gfx::Vector2dF& accumulated_overscroll,
-      const gfx::Vector2dF& latest_overscroll_delta,
-      const gfx::Vector2dF& current_fling_velocity,
-      const gfx::PointF& causal_event_viewport_point,
-      const cc::OverscrollBehavior& overscroll_behavior) = 0;
-
   virtual void DidAnimateForInput() = 0;
 
   virtual void DidStartScrollingViewport() = 0;