Route touch-events for WebViewGuest directly to guest renderer.

content/browser/frame_host/render_widget_host_view_guest.h

 // Copyright 2014 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_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 22 matching lines @@
 // The BrowserPlugin is currently a special case for out-of-process rendered
 // content and therefore inherits from RenderWidgetHostViewChildFrame.
 // Eventually all RenderWidgetHostViewGuest code will be subsumed by
 // RenderWidgetHostViewChildFrame and this class will be removed.
 //
 // Some elements that are platform specific will be deal with by delegating
 // the relevant calls to the platform view.
 class CONTENT_EXPORT RenderWidgetHostViewGuest
     : public RenderWidgetHostViewChildFrame,
       public ui::GestureConsumer,
       public ui::GestureEventHelper {

[tdresser, 2015/11/02 15:38:25]

We don't need to be a GestureEventHelper anymore, do we?

[wjmaclean, 2015/11/02 19:23:10]

I missed this, so thanks for noticing! We can delete a bunch of code here ...

  public:
   RenderWidgetHostViewGuest(
       RenderWidgetHost* widget,
       BrowserPluginGuest* guest,
       base::WeakPtr<RenderWidgetHostViewBase> platform_view);
   ~RenderWidgetHostViewGuest() override;
 
   bool OnMessageReceivedFromEmbedder(const IPC::Message& message,
                                      RenderWidgetHostImpl* embedder);
 
@@ skipping 37 matching lines @@
                         size_t offset,
                         const gfx::Range& range) override;
   void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) override;
   void OnSwapCompositorFrame(uint32 output_surface_id,
                              scoped_ptr<cc::CompositorFrame> frame) override;
 #if defined(USE_AURA)
   void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
                               InputEventAckState ack_result) override;
 #endif
+  void ProcessTouchEvent(const blink::WebTouchEvent& event,
+                         const ui::LatencyInfo& latency) override;
   bool LockMouse() override;
   void UnlockMouse() override;
   void GetScreenInfo(blink::WebScreenInfo* results) override;
   bool GetScreenColorProfile(std::vector<char>* color_profile) override;
 
 #if defined(OS_MACOSX)
   // RenderWidgetHostView implementation.
   void SetActive(bool active) override;
   void SetWindowVisibility(bool visible) override;
   void WindowFrameChanged() override;
@@ skipping 55 matching lines @@
                           const blink::WebInputEvent* event);
 
   // BrowserPluginGuest and RenderWidgetHostViewGuest's lifetimes are not tied
   // to one another, therefore we access |guest_| through WeakPtr.
   base::WeakPtr<BrowserPluginGuest> guest_;
   gfx::Size size_;
   // The platform view for this RenderWidgetHostView.
   // RenderWidgetHostViewGuest mostly only cares about stuff related to
   // compositing, the rest are directly forwared to this |platform_view_|.
   base::WeakPtr<RenderWidgetHostViewBase> platform_view_;
-#if defined(USE_AURA)
-  scoped_ptr<ui::GestureRecognizer> gesture_recognizer_;
-#endif
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_