Why this CL triggers an OilPan crash.

content/public/test/render_view_test.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/public/test/render_view_test.h"
 
 #include <stddef.h>
 
 #include <cctype>
 
@@ skipping 280 matching lines @@
 
   mojom::CreateViewParams view_params;
   view_params.opener_frame_route_id = MSG_ROUTING_NONE;
   view_params.window_was_created_with_opener = false;
   view_params.renderer_preferences = RendererPreferences();
   view_params.web_preferences = WebPreferences();
   view_params.view_id = kRouteId;
   view_params.main_frame_routing_id = kMainFrameRouteId;
   view_params.main_frame_widget_routing_id = kMainFrameWidgetRouteId;
   view_params.session_storage_namespace_id = kInvalidSessionStorageNamespaceId;
+  view_params.browsing_instance_id = blink::WebView::kUnknownBrowsingInstance;
   view_params.swapped_out = false;
   view_params.replicated_frame_state = FrameReplicationState();
   view_params.proxy_routing_id = MSG_ROUTING_NONE;
   view_params.hidden = false;
   view_params.never_visible = false;
   view_params.initial_size = *InitialSizeParams();
   view_params.enable_auto_resize = false;
   view_params.min_size = gfx::Size();
   view_params.max_size = gfx::Size();
 
@@ skipping 351 matching lines @@
       static_cast<TestRenderFrame*>(impl->GetMainRenderFrame());
   frame->Navigate(common_params, StartNavigationParams(), request_params);
 
   // The load actually happens asynchronously, so we pump messages to process
   // the pending continuation.
   FrameLoadWaiter(frame).Wait();
   view_->GetWebView()->UpdateAllLifecyclePhases();
 }
 
 }  // namespace content