Intersection Observer support for OOPIF

content/browser/frame_host/cross_process_frame_connector.cc

 // 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.
 
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_hittest.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/surface_utils.h"
@@ skipping 24 matching lines @@
   // Notify the view of this object being destroyed, if the view still exists.
   set_view(nullptr);
 }
 
 bool CrossProcessFrameConnector::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
 
   IPC_BEGIN_MESSAGE_MAP(CrossProcessFrameConnector, msg)
     IPC_MESSAGE_HANDLER(FrameHostMsg_ForwardInputEvent, OnForwardInputEvent)
     IPC_MESSAGE_HANDLER(FrameHostMsg_FrameRectChanged, OnFrameRectChanged)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_UpdateViewportIntersection,
+                        OnUpdateViewportIntersection)
     IPC_MESSAGE_HANDLER(FrameHostMsg_VisibilityChanged, OnVisibilityChanged)
     IPC_MESSAGE_HANDLER(FrameHostMsg_SatisfySequence, OnSatisfySequence)
     IPC_MESSAGE_HANDLER(FrameHostMsg_RequireSequence, OnRequireSequence)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void CrossProcessFrameConnector::set_view(
@@ skipping 235 matching lines @@
     return;
   }
 }
 
 void CrossProcessFrameConnector::OnFrameRectChanged(
     const gfx::Rect& frame_rect) {
   if (!frame_rect.size().IsEmpty())
     SetRect(frame_rect);
 }
 
+void CrossProcessFrameConnector::OnUpdateViewportIntersection(
+    const gfx::Rect& viewport_intersection) {
+  if (view_)
+    view_->UpdateViewportIntersection(viewport_intersection);
+}
+
 void CrossProcessFrameConnector::OnVisibilityChanged(bool visible) {
   if (!view_)
     return;
 
   // If there is an inner WebContents, it should be notified of the change in
   // the visibility. The Show/Hide methods will not be called if an inner
   // WebContents exists since the corresponding WebContents will itself call
   // Show/Hide on all the RenderWidgetHostViews (including this) one.
   if (frame_proxy_in_parent_renderer_->frame_tree_node()
           ->render_manager()
@@ skipping 68 matching lines @@
 
   if (parent) {
     return static_cast<RenderWidgetHostViewBase*>(
         parent->current_frame_host()->GetView());
   }
 
   return nullptr;
 }
 
 }  // namespace content