Avoid exiting the renderer process if it has a pending render view.

content/browser/renderer_host/render_process_host.cc

 // Copyright (c) 2011 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/renderer_host/render_process_host.h"
 
 #include "base/rand_util.h"
 #include "base/sys_info.h"
 #include "chrome/common/chrome_constants.h"
 #include "content/browser/browser_thread.h"
@@ skipping 76 matching lines @@
 
 // static
 void RenderProcessHost::SetMaxRendererProcessCount(size_t count) {
   max_renderer_count_override = count;
 }
 
 RenderProcessHost::RenderProcessHost(Profile* profile)
     : max_page_id_(-1),
       fast_shutdown_started_(false),
       deleting_soon_(false),
+      pending_views_(0),
       id_(ChildProcessInfo::GenerateChildProcessUniqueId()),
       profile_(profile),
       sudden_termination_allowed_(true),
       ignore_input_events_(false) {
   all_hosts.AddWithID(this, id());
   all_hosts.set_check_on_null_data(true);
   // Initialize |child_process_activity_time_| to a reasonable value.
   mark_child_process_activity_time();
 }
 
@@ skipping 29 matching lines @@
     // Remove ourself from the list of renderer processes so that we can't be
     // reused in between now and when the Delete task runs.
     all_hosts.Remove(id());
   }
 }
 
 void RenderProcessHost::ReportExpectingClose(int32 listener_id) {
   listeners_expecting_close_.insert(listener_id);
 }
 
+void RenderProcessHost::AddPendingView() {
+  pending_views_++;
+}
+
+void RenderProcessHost::RemovePendingView() {
+  DCHECK(pending_views_);
+  pending_views_--;
+}
+
 void RenderProcessHost::UpdateMaxPageID(int32 page_id) {
   if (page_id > max_page_id_)
     max_page_id_ = page_id;
 }
 
 bool RenderProcessHost::FastShutdownForPageCount(size_t count) {
   if (listeners_.size() == count)
     return FastShutdownIfPossible();
   return false;
 }
@@ skipping 42 matching lines @@
 
   // Now pick a random suitable renderer, if we have any.
   if (!suitable_renderers.empty()) {
     int suitable_count = static_cast<int>(suitable_renderers.size());
     int random_index = base::RandInt(0, suitable_count - 1);
     return suitable_renderers[random_index];
   }
 
   return NULL;
 }