Implement active wheel fling transfer via WebCompositorInputHandlerClient

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 7530f09cc8a8f10312512336d1bd90ab90f684bd..d95b56ea7fce13a11c534ada8a54fe6c5f9d3c69 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -17,7 +17,6 @@
 #include "content/common/swapped_out_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
-#include "content/renderer/gpu/compositor_thread.h"
 #include "content/renderer/render_process.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
@@ -1075,11 +1074,6 @@ void RenderWidget::didAutoResize(const WebSize& new_size) {
 void RenderWidget::didActivateCompositor(int input_handler_identifier) {
   TRACE_EVENT0("gpu", "RenderWidget::didActivateCompositor");
 
-  CompositorThread* compositor_thread =
-      RenderThreadImpl::current()->compositor_thread();
-  if (compositor_thread)
-    compositor_thread->AddInputHandler(routing_id_, input_handler_identifier);
-
   if (!is_accelerated_compositing_active_) {
     // When not in accelerated compositing mode, in certain cases (e.g. waiting
     // for a resize or if no backing store) the RenderWidgetHost is blocking the