Explicit interface for synchronous InputHandlerProxy input handling

content/renderer/gpu/input_handler_proxy.cc

Index: content/renderer/gpu/input_handler_proxy.cc
diff --git a/content/renderer/gpu/input_handler_proxy.cc b/content/renderer/gpu/input_handler_proxy.cc
index 24c541c92fe1ba546125ecd4d74217fc4b59a6ff..0b1ec5893497f491571a554de026a94afeecc013 100644
--- a/content/renderer/gpu/input_handler_proxy.cc
+++ b/content/renderer/gpu/input_handler_proxy.cc
@@ -46,28 +46,19 @@ void InputHandlerProxy::SetClient(InputHandlerProxyClient* client) {
   client_ = client;
 }
 
-void InputHandlerProxy::HandleInputEvent(const WebInputEvent& event) {
+InputHandlerProxy::EventDisposition InputHandlerProxy::HandleInputEvent(
+    const WebInputEvent& event) {
   DCHECK(client_);
   DCHECK(input_handler_);
 
   InputHandlerProxy::EventDisposition disposition =
       HandleInputEventInternal(event);
-  switch (disposition) {
-    case DidHandle:
-      client_->DidHandleInputEvent();
-      break;
-    case DidNotHandle:
-      client_->DidNotHandleInputEvent(true /* send_to_widget */);
-      break;
-    case DropEvent:
-      client_->DidNotHandleInputEvent(false /* send_to_widget */);
-      break;
-  }
   if (event.modifiers & WebInputEvent::IsLastInputEventForCurrentVSync) {
     input_handler_->DidReceiveLastInputEventForBeginFrame(
         base::TimeTicks::FromInternalValue(event.timeStampSeconds *
                                            base::Time::kMicrosecondsPerSecond));
   }
+  return disposition;
 }
 
 InputHandlerProxy::EventDisposition