input: Make the OverscrollController less intrusive, and some code cleanup.

content/browser/renderer_host/overscroll_controller.cc

Index: content/browser/renderer_host/overscroll_controller.cc
diff --git a/content/browser/renderer_host/overscroll_controller.cc b/content/browser/renderer_host/overscroll_controller.cc
index 51ff7dfc3d4c26952e2021c99779a684ebaed0ac..4df4d3551d6709bd6a30fa4e8ab981b4f67c8135 100644
--- a/content/browser/renderer_host/overscroll_controller.cc
+++ b/content/browser/renderer_host/overscroll_controller.cc
@@ -64,8 +64,7 @@ bool OverscrollController::WillDispatchEvent(
     // touch-scrolls maintain state in the renderer side (in the compositor, for
     // example), and the event that completes this action needs to be sent to
     // the renderer so that those states can be updated/reset appropriately.
-    // Send the event through the host when appropriate.
-    if (ShouldForwardToHost(event)) {
+    if (WebKit::WebInputEvent::isGestureEventType(event.type)) {
       const WebKit::WebGestureEvent& gevent =
           static_cast<const WebKit::WebGestureEvent&>(event);
       return render_widget_host_->ShouldForwardGestureEvent(
@@ -79,8 +78,8 @@ bool OverscrollController::WillDispatchEvent(
     SetOverscrollMode(OVERSCROLL_NONE);
     // The overscroll gesture status is being reset. If the event is a
     // gesture event (from either touchscreen or trackpad), then make sure the
-    // host gets the event first (if it didn't already process it).
-    if (ShouldForwardToHost(event)) {
+    // host gets the event first.
+    if (WebKit::WebInputEvent::isGestureEventType(event.type)) {
       const WebKit::WebGestureEvent& gevent =
           static_cast<const WebKit::WebGestureEvent&>(event);
       return render_widget_host_->ShouldForwardGestureEvent(
@@ -367,14 +366,4 @@ void OverscrollController::SetOverscrollMode(OverscrollMode mode) {
     delegate_->OnOverscrollModeChange(old_mode, overscroll_mode_);
 }
 
-bool OverscrollController::ShouldForwardToHost(
-    const WebKit::WebInputEvent& event) const {
-  if (!WebKit::WebInputEvent::isGestureEventType(event.type))
-    return false;
-
-  // If the RenderWidgetHost already processed this event, then the event must
-  // not be sent again.
-  return !render_widget_host_->HasQueuedGestureEvents();
-}
-
 }  // namespace content