Revert 111252 - Switch MHTMLGenerationManager to use a Callback.

content/browser/download/mhtml_generation_manager.cc

Index: content/browser/download/mhtml_generation_manager.cc
===================================================================
--- content/browser/download/mhtml_generation_manager.cc	(revision 111255)
+++ content/browser/download/mhtml_generation_manager.cc	(working copy)
@@ -29,8 +29,7 @@
 }
 
 void MHTMLGenerationManager::GenerateMHTML(TabContents* tab_contents,
-    const FilePath& file,
-    const GenerateMHTMLCallback& callback) {
+                                           const FilePath& file) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   static int id_counter = 0;
 
@@ -39,7 +38,6 @@
   job.file_path = file;
   job.process_id = tab_contents->GetRenderProcessHost()->GetID();
   job.routing_id = tab_contents->render_view_host()->routing_id();
-  job.callback = callback;
   id_to_job_[job_id] = job;
 
   base::ProcessHandle renderer_process =
@@ -111,8 +109,19 @@
   }
 
   Job& job = iter->second;
-  job.callback.Run(job.file_path, file_size);
 
+  RenderViewHost* rvh = RenderViewHost::FromID(job.process_id, job.routing_id);
+  if (rvh) {
+    NotificationDetails details;
+    details.file_path = job.file_path;
+    details.file_size = file_size;
+
+    content::NotificationService::current()->Notify(
+        content::NOTIFICATION_MHTML_GENERATED,
+        content::Source<RenderViewHost>(rvh),
+        content::Details<NotificationDetails>(&details));
+  }
+
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&MHTMLGenerationManager::CloseFile, this, job.browser_file));