Check that all RenderProcessHost(s) are terminated.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 2090 matching lines @@
 
   // Look up the map of site to process for the given browser_context,
   // in case we need to remove this process from it.  It will be registered
   // under any sites it rendered that use process-per-site mode.
   SiteProcessMap* map =
       GetSiteProcessMapForBrowserContext(host->GetBrowserContext());
   map->RemoveProcess(host);
 }
 
 // static
+void RenderProcessHostImpl::CheckAllTerminated() {
+  iterator iter(AllHostsIterator());
+  while (!iter.IsAtEnd()) {
+    // The leftover hosts must have reset IPC channel and getting deleted soon.
+    RenderProcessHostImpl* host =
+        static_cast<RenderProcessHostImpl*>(iter.GetCurrentValue());
+    CHECK(host->listeners_.IsEmpty());
+    CHECK_EQ(0, host->worker_ref_count_);
+    CHECK(!host->channel_);
+    CHECK(host->deleting_soon_);
+  }
+}
+
+// static
 void RenderProcessHostImpl::FilterURL(RenderProcessHost* rph,
                                       bool empty_allowed,
                                       GURL* url) {
   ChildProcessSecurityPolicyImpl* policy =
       ChildProcessSecurityPolicyImpl::GetInstance();
 
   if (empty_allowed && url->is_empty())
     return;
 
   if (!url->is_valid()) {
@@ skipping 643 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing. Alias
   // enough information here so that we can determine what the bad message was.
   base::debug::Alias(&error);
   bad_message::ReceivedBadMessage(process.get(),
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content