Route touch-events for WebViewGuest directly to guest renderer.

content/browser/renderer_host/render_widget_host_input_event_router.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_
 
 #include <stdint.h>
 
 #include "base/containers/hash_tables.h"
 #include "content/common/content_export.h"
 
 namespace blink {
 class WebMouseEvent;
 class WebMouseWheelEvent;
+class WebTouchEvent;
 }
 
 namespace gfx {
 class Point;
 }
 
+namespace ui {
+class LatencyInfo;
+}
+
 namespace content {
 
 class RenderWidgetHostViewBase;
 
 // Class owned by WebContentsImpl for the purpose of directing input events
 // to the correct RenderWidgetHost on pages with multiple RenderWidgetHosts.
 // It maintains a mapping of RenderWidgetHostViews to Surface IDs that they
 // own. When an input event requires routing based on window coordinates,
 // this class requests a Surface hit test from the provided |root_view| and
 // forwards the event to the owning RWHV of the returned Surface ID.
 class CONTENT_EXPORT RenderWidgetHostInputEventRouter {
  public:
   RenderWidgetHostInputEventRouter();
   ~RenderWidgetHostInputEventRouter();
 
   void RouteMouseEvent(RenderWidgetHostViewBase* root_view,
                        blink::WebMouseEvent* event);
   void RouteMouseWheelEvent(RenderWidgetHostViewBase* root_view,
                             blink::WebMouseWheelEvent* event);
+  void RouteTouchEvent(RenderWidgetHostViewBase* root_view,
+                       blink::WebTouchEvent *event,
+                       const ui::LatencyInfo& latency);
 
   void AddSurfaceIdNamespaceOwner(uint32_t id, RenderWidgetHostViewBase* owner);
   void RemoveSurfaceIdNamespaceOwner(uint32_t id);
 
+  bool is_registered(uint32_t id) {
+    return owner_map_.find(id) != owner_map_.end();
+  }
+
  private:
   RenderWidgetHostViewBase* FindEventTarget(RenderWidgetHostViewBase* root_view,
                                             const gfx::Point& point,
                                             gfx::Point* transformed_point);
 
   typedef base::hash_map<uint32_t, RenderWidgetHostViewBase*>
       SurfaceIdNamespaceOwnerMap;
   SurfaceIdNamespaceOwnerMap owner_map_;
+  RenderWidgetHostViewBase* current_touch_target_;
+  int active_touches_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostInputEventRouter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_