Why this CL triggers an OilPan crash.

content/renderer/render_view_impl.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_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 594 matching lines @@
     const mojom::CreateViewParams& params,
     const RenderWidget::ShowCallback& show_callback) {
   bool was_created_by_renderer = !show_callback.is_null();
 #if defined(OS_ANDROID)
   // TODO(sgurun): crbug.com/325351 Needed only for android webview's deprecated
   // HandleNavigation codepath.
   was_created_by_renderer_ = was_created_by_renderer;
 #endif
   display_mode_ = params.initial_size.display_mode;
 
-  webview_ = WebView::Create(this, is_hidden()
-                                       ? blink::kWebPageVisibilityStateHidden
-                                       : blink::kWebPageVisibilityStateVisible);
+  browsing_instance_id_ = params.browsing_instance_id;
+  webview_ =
+      WebView::Create(this,
+                      is_hidden() ? blink::kWebPageVisibilityStateHidden
+                                  : blink::kWebPageVisibilityStateVisible,
+                      params.browsing_instance_id);
   RenderWidget::Init(show_callback, webview_->GetWidget());
 
   g_view_map.Get().insert(std::make_pair(webview(), this));
   g_routing_id_view_map.Get().insert(std::make_pair(GetRoutingID(), this));
 
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kStatsCollectionController))
     stats_collection_observer_.reset(new StatsCollectionObserver(this));
@@ skipping 834 matching lines @@
   DCHECK_EQ(GetRoutingID(), creator_frame->render_view()->GetRoutingID());
 
   view_params.window_was_created_with_opener = true;
   view_params.renderer_preferences = renderer_preferences_;
   view_params.web_preferences = webkit_preferences_;
   view_params.view_id = reply->route_id;
   view_params.main_frame_routing_id = reply->main_frame_route_id;
   view_params.main_frame_widget_routing_id = reply->main_frame_widget_route_id;
   view_params.session_storage_namespace_id =
       reply->cloned_session_storage_namespace_id;
+  view_params.browsing_instance_id =
+      creator_frame->render_view()->browsing_instance_id_;
   view_params.swapped_out = false;
   // WebCore will take care of setting the correct name.
   view_params.replicated_frame_state = FrameReplicationState();
   view_params.hidden = is_background_tab;
   view_params.never_visible = never_visible;
   view_params.initial_size = initial_size;
   view_params.enable_auto_resize = false;
   view_params.min_size = gfx::Size();
   view_params.max_size = gfx::Size();
   view_params.page_zoom_level = page_zoom_level_;
@@ skipping 1187 matching lines @@
                         input_event.GetCoalescedEventsPointers(), latency_info,
                         dispatch_type);
     return INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
   }
   idle_user_detector_->ActivityDetected();
   return RenderWidget::HandleInputEvent(input_event, latency_info,
                                         dispatch_type);
 }
 
 }  // namespace content