Route touchmove existence notifications to the TouchEventQueue

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 2297 matching lines @@
 
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
   InputHandlerManager* input_handler_manager =
       render_thread ? render_thread->input_handler_manager() : NULL;
   if (input_handler_manager) {
     input_handler_manager->ObserveWheelEventAndResultOnMainThread(
         routing_id_, wheel_event, scroll_result);
   }
 }
 
-void RenderWidget::hasTouchEventHandlers(bool has_handlers) {
-  Send(new ViewHostMsg_HasTouchEventHandlers(routing_id_, has_handlers));
+void RenderWidget::hasEventHandlers(blink::WebEventHandlerClass handler_class,
+                                    bool has_handlers) {
+  // TODO(jdduke): Consider batching these notifications, posting a task
+  // to send them asynchronously.
+  switch (handler_class) {
+    case blink::WebEventHandlerClassTouch:
+      Send(new InputHostMsg_HasTouchEventHandlers(routing_id_, has_handlers));
+      break;
+
+    case blink::WebEventHandlerClassTouchMove:
+      Send(new InputHostMsg_HasTouchMoveEventHandlers(routing_id_,
+                                                      has_handlers));
+      break;
+
+    default:
+      break;
+  }
 }
 
 // Check blink::WebTouchAction and  blink::WebTouchActionAuto is kept in sync
 #define STATIC_ASSERT_WTI_ENUM_MATCH(a, b)                                         \
     static_assert(int(blink::WebTouchAction##a) == int(TOUCH_ACTION_##b), \
                   "mismatching enums: " #a)
 
 inline content::TouchAction& operator|=(content::TouchAction& a,
                                         content::TouchAction b) {
   a = static_cast<content::TouchAction>(static_cast<int>(a) |
@@ skipping 128 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content