input: Remove now dead code.

content/browser/renderer_host/input/input_router_impl.cc

Index: content/browser/renderer_host/input/input_router_impl.cc
diff --git a/content/browser/renderer_host/input/input_router_impl.cc b/content/browser/renderer_host/input/input_router_impl.cc
index c3ff486accc190c74093ccf8206efdc66587cff0..f01b8144bfc4d5c75af033f57c3dbcb9a0e882bb 100644
--- a/content/browser/renderer_host/input/input_router_impl.cc
+++ b/content/browser/renderer_host/input/input_router_impl.cc
@@ -84,7 +84,6 @@ InputRouterImpl::InputRouterImpl(IPC::Sender* sender,
       select_message_pending_(false),
       move_caret_pending_(false),
       current_ack_source_(ACK_SOURCE_NONE),
-      flush_requested_(false),
       active_renderer_fling_count_(0),
       touch_scroll_started_sent_(false),
       wheel_event_queue_(this,
@@ -231,11 +230,6 @@ void InputRouterImpl::NotifySiteIsMobileOptimized(bool is_mobile_optimized) {
   touch_event_queue_->SetIsMobileOptimizedSite(is_mobile_optimized);
 }
 
-void InputRouterImpl::RequestNotificationWhenFlushed() {
-  flush_requested_ = true;
-  SignalFlushedIfNecessary();
-}
-
 bool InputRouterImpl::HasPendingEvents() const {
   return !touch_event_queue_->Empty() || !gesture_event_queue_.empty() ||
          !key_queue_.empty() || !mouse_move_queue_.empty() ||
@@ -518,7 +512,6 @@ void InputRouterImpl::OnDidStopFlinging() {
   // renderer, not from any other consumers. Consequently, the GestureEventQueue
   // cannot use this bookkeeping for logic like tap suppression.
   --active_renderer_fling_count_;
-  SignalFlushedIfNecessary();
 
   client_->DidStopFlinging();
 }
@@ -555,8 +548,6 @@ void InputRouterImpl::ProcessInputEventAck(WebInputEvent::Type event_type,
   } else if (event_type != WebInputEvent::kUndefined) {
     ack_handler_->OnUnexpectedEventAck(InputAckHandler::BAD_ACK_MESSAGE);
   }
-
-  SignalFlushedIfNecessary();
 }
 
 void InputRouterImpl::ProcessKeyboardAck(blink::WebInputEvent::Type type,
@@ -632,17 +623,6 @@ void InputRouterImpl::UpdateTouchAckTimeoutEnabled() {
   touch_event_queue_->SetAckTimeoutEnabled(touch_ack_timeout_enabled);
 }
 
-void InputRouterImpl::SignalFlushedIfNecessary() {
-  if (!flush_requested_)
-    return;
-
-  if (HasPendingEvents())
-    return;
-
-  flush_requested_ = false;
-  client_->DidFlush();
-}
-
 void InputRouterImpl::SetFrameTreeNodeId(int frameTreeNodeId) {
   frame_tree_node_id_ = frameTreeNodeId;
 }