Remove EPM:all_hosts_ and use all_extension_views_ instead.

chrome/browser/extensions/process_management_browsertest.cc

 // Copyright (c) 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.
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/automation/automation_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 197 matching lines @@
       CURRENT_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
 
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), base_url.Resolve("api_test/management/test/basics.html"),
       CURRENT_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
 
   std::set<int> process_ids;
   Profile* profile = browser()->GetProfile();
   ExtensionProcessManager* epm = profile->GetExtensionProcessManager();
 
-  for (ExtensionProcessManager::const_iterator iter = epm->begin();
-       iter != epm->end();
-       ++iter) {
-    ExtensionHost* host = *iter;
-    if (host->extension()->has_background_page()) {
-      process_ids.insert(host->render_process_host()->GetID());
-    }
+  for (ExtensionProcessManager::const_iterator iter =
+           epm->background_hosts().begin();
+       iter != epm->background_hosts().end(); ++iter) {
+    process_ids.insert((*iter)->render_process_host()->GetID());
   }
 
   // We've loaded 5 extensions with background pages, 1 extension without
   // background page, and one isolated app. We expect only 2 unique processes
   // hosting those extensions.
   EXPECT_GE((size_t) 6, profile->GetExtensionService()->process_map()->size());
   EXPECT_EQ((size_t) 2, process_ids.size());
 }