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

content/browser/renderer_host/render_process_host.cc

Index: content/browser/renderer_host/render_process_host.cc
diff --git a/content/browser/renderer_host/render_process_host.cc b/content/browser/renderer_host/render_process_host.cc
index cf380ab39b80e4c7109ad7f8fd0678c121612532..379ce99329003bb1d16db82a659a982828369626 100644
--- a/content/browser/renderer_host/render_process_host.cc
+++ b/content/browser/renderer_host/render_process_host.cc
@@ -94,6 +94,7 @@ 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),
@@ -143,6 +144,15 @@ 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;