Cleanup checking for wheel gesture flags.

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 a6d37b18bd73f6df2cd641fc91832b46546ca39e..224b7a58688d81de8e4f7351cf3feb18e68c12c8 100644
--- a/content/browser/renderer_host/input/input_router_impl.cc
+++ b/content/browser/renderer_host/input/input_router_impl.cc
@@ -19,6 +19,7 @@
 #include "content/common/content_constants_internal.h"
 #include "content/common/edit_command.h"
 #include "content/common/input/input_event_ack_state.h"
+#include "content/common/input/input_event_utils.h"
 #include "content/common/input/touch_action.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "content/common/input_messages.h"
@@ -57,11 +58,6 @@ const char* GetEventAckName(InputEventAckState ack_result) {
   return "";
 }
 
-bool UseGestureBasedWheelScrolling() {
-  return base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kEnableWheelGestures);
-}
-
 } // namespace
 
 InputRouterImpl::Config::Config() {