Propagate inert state to OOPIFs when a modal dialog is active

content/browser/frame_host/render_widget_host_view_child_frame.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/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 373 matching lines @@
   }
 }
 
 void RenderWidgetHostViewChildFrame::UpdateViewportIntersection(
     const gfx::Rect& viewport_intersection) {
   if (host_)
     host_->Send(new ViewMsg_SetViewportIntersection(host_->GetRoutingID(),
                                                     viewport_intersection));
 }
 
+void RenderWidgetHostViewChildFrame::SetIsInert() {
+  if (host_ && frame_connector_) {
+    host_->Send(new ViewMsg_SetIsInert(host_->GetRoutingID(),
+                                       frame_connector_->is_inert()));
+  }
+}
+
 void RenderWidgetHostViewChildFrame::GestureEventAck(
     const blink::WebGestureEvent& event,
     InputEventAckState ack_result) {
   bool not_consumed = ack_result == INPUT_EVENT_ACK_STATE_NOT_CONSUMED ||
                       ack_result == INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
   // GestureScrollBegin is consumed by the target frame and not forwarded,
   // because we don't know whether we will need to bubble scroll until we
   // receive a GestureScrollUpdate ACK. GestureScrollUpdate with unused
   // scroll extent is forwarded for bubbling, while GestureScrollEnd is
   // always forwarded and handled according to current scroll state in the
@@ skipping 219 matching lines @@
   return frame_connector_->TransformPointToCoordSpaceForView(
       point, target_view, cc::SurfaceId(frame_sink_id_, local_surface_id_),
       transformed_point);
 }
 
 bool RenderWidgetHostViewChildFrame::IsRenderWidgetHostViewChildFrame() {
   return true;
 }
 
 void RenderWidgetHostViewChildFrame::WillSendScreenRects() {
-  if (frame_connector_)
+  // TODO(kenrb): These represent post-initialization state updates that are
+  // needed by the renderer. During normal OOPIF setup these are unnecessary,
+  // as the parent renderer will send the information and it will be
+  // immediately propagated to the OOPIF. However when an OOPIF navigates from
+  // one process to another, the parent doesn't know that, and certain
+  // browser-side state needs to be sent again. There is probably a less
+  // spammy way to do this, but triggering on SendScreenRects() is reasonable
+  // until somebody figures that out. RWHVCF::Init() is too early.
+  if (frame_connector_) {
     UpdateViewportIntersection(frame_connector_->viewport_intersection());
+    SetIsInert();
+  }
 }
 
 #if defined(OS_MACOSX)
 ui::AcceleratedWidgetMac*
 RenderWidgetHostViewChildFrame::GetAcceleratedWidgetMac() const {
   return nullptr;
 }
 
 void RenderWidgetHostViewChildFrame::SetActive(bool active) {
 }
@@ skipping 208 matching lines @@
     auto origin = GetViewBounds().origin() -
                   frame_connector_->GetRootRenderWidgetHostView()
                       ->GetViewBounds()
                       .origin();
     return gfx::Point(origin.x(), origin.y());
   }
   return gfx::Point();
 }
 
 }  // namespace content