MHTMLGenerationManager handles the death of a render process.

content/browser/download/mhtml_generation_manager.h

Index: content/browser/download/mhtml_generation_manager.h
diff --git a/content/browser/download/mhtml_generation_manager.h b/content/browser/download/mhtml_generation_manager.h
index efc6b46039e43f52bcdf4d0ba88445743e4a2b34..7f83f27dc892db8dd96357a4443a8e78ed1f0208 100644
--- a/content/browser/download/mhtml_generation_manager.h
+++ b/content/browser/download/mhtml_generation_manager.h
@@ -10,6 +10,8 @@
 #include "base/memory/singleton.h"
 #include "base/platform_file.h"
 #include "base/process/process.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "ipc/ipc_platform_file.h"
 
 namespace base {
@@ -19,7 +21,7 @@ class FilePath;
 namespace content {
 class WebContents;
 
-class MHTMLGenerationManager {
+class MHTMLGenerationManager : public NotificationObserver {
  public:
   static MHTMLGenerationManager* GetInstance();
 
@@ -37,6 +39,11 @@ class MHTMLGenerationManager {
   // or -1 in case of failure.
   void MHTMLGenerated(int job_id, int64 mhtml_data_size);
 
+  // Implementation of NotificationObserver.

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

Nit: could be moved to the private section.

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

Done.

+  virtual void Observe(int type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details) OVERRIDE;
+
  private:
   friend struct DefaultSingletonTraits<MHTMLGenerationManager>;
 
@@ -85,6 +92,7 @@ class MHTMLGenerationManager {
 
   typedef std::map<int, Job> IDToJobMap;
   IDToJobMap id_to_job_;
+  NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(MHTMLGenerationManager);
 };