Revert 111252 - Switch MHTMLGenerationManager to use a Callback.

content/browser/download/mhtml_generation_manager.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/download/mhtml_generation_manager.h"
 
 #include "base/bind.h"
 #include "base/platform_file.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host.h"
@@ skipping 11 matching lines @@
       routing_id(-1) {
 }
 
 MHTMLGenerationManager::MHTMLGenerationManager() {
 }
 
 MHTMLGenerationManager::~MHTMLGenerationManager() {
 }
 
 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;
 
   int job_id = id_counter++;
   Job job;
   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 =
       tab_contents->GetRenderProcessHost()->GetHandle();
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&MHTMLGenerationManager::CreateFile, this,
                  job_id, file, renderer_process));
 }
 
 void MHTMLGenerationManager::MHTMLGenerated(int job_id, int64 mhtml_data_size) {
@@ skipping 51 matching lines @@
 }
 
 void MHTMLGenerationManager::JobFinished(int job_id, int64 file_size) {
   IDToJobMap::iterator iter = id_to_job_.find(job_id);
   if (iter == id_to_job_.end()) {
     NOTREACHED();
     return;
   }
 
   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));
 
   id_to_job_.erase(job_id);
 }
 
 void MHTMLGenerationManager::CloseFile(base::PlatformFile file) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   base::ClosePlatformFile(file);
 }