MHTMLGenerationManager handles the death of a render process.

content/browser/download/mhtml_generation_manager.cc

Index: content/browser/download/mhtml_generation_manager.cc
diff --git a/content/browser/download/mhtml_generation_manager.cc b/content/browser/download/mhtml_generation_manager.cc
index d6a0d474b3861cd1e909094d0f5a98d9e18ca8ae..1685a71e3011abd2ab923a302c4c4ab2ca8c652b 100644
--- a/content/browser/download/mhtml_generation_manager.cc
+++ b/content/browser/download/mhtml_generation_manager.cc
@@ -50,6 +50,15 @@ void MHTMLGenerationManager::GenerateMHTML(
   job.routing_id = web_contents->GetRenderViewHost()->GetRoutingID();
   job.callback = callback;
   id_to_job_[job_id] = job;
+  if (!registrar_.IsRegistered(
+          this,
+          NOTIFICATION_RENDERER_PROCESS_TERMINATED,
+          Source<RenderProcessHost>(web_contents->GetRenderProcessHost()))) {
+    registrar_.Add(
+        this,
+        NOTIFICATION_RENDERER_PROCESS_TERMINATED,
+        Source<RenderProcessHost>(web_contents->GetRenderProcessHost()));
+  }
 
   base::ProcessHandle renderer_process =
       web_contents->GetRenderProcessHost()->GetHandle();
@@ -62,6 +71,24 @@ void MHTMLGenerationManager::MHTMLGenerated(int job_id, int64 mhtml_data_size) {
   JobFinished(job_id, mhtml_data_size);
 }
 
+void MHTMLGenerationManager::Observe(int type,
+                                     const NotificationSource& source,
+                                     const NotificationDetails& details) {
+  DCHECK(type == NOTIFICATION_RENDERER_PROCESS_TERMINATED);
+  RenderProcessHost* host = Source<RenderProcessHost>(source).ptr();
+  std::set<int> job_to_delete;
+  for (IDToJobMap::iterator it = id_to_job_.begin(); it != id_to_job_.end();
+       ++it) {
+    if (it->second.process_id == host->GetID())
+      job_to_delete.insert(it->first);
+  }
+  for (std::set<int>::iterator it = job_to_delete.begin();
+       it != job_to_delete.end();
+       ++it) {
+    JobFinished(*it, -1);
+  }
+}

[Jay Civelli, 2013/08/01 17:57:00]

Shouldn't we unregister for notifications for that renderer process?

[qsr, 2013/08/02 14:22:24]

Done.

+
 void MHTMLGenerationManager::CreateFile(
     int job_id, const base::FilePath& file_path,
     base::ProcessHandle renderer_process) {