Remove EPM:all_hosts_ and use all_extension_views_ instead.

chrome/browser/extensions/process_management_browsertest.cc

Index: chrome/browser/extensions/process_management_browsertest.cc
diff --git a/chrome/browser/extensions/process_management_browsertest.cc b/chrome/browser/extensions/process_management_browsertest.cc
index 6e1318960ca163045b8ee53571a6269d94c4d031..75a4c828d2003001708f455de5f0e5d060d36583 100644
--- a/chrome/browser/extensions/process_management_browsertest.cc
+++ b/chrome/browser/extensions/process_management_browsertest.cc
@@ -215,8 +215,9 @@ IN_PROC_BROWSER_TEST_F(ProcessManagementTest, ExtensionProcessBalancing) {
   Profile* profile = browser()->GetProfile();
   ExtensionProcessManager* epm = profile->GetExtensionProcessManager();
 
-  for (ExtensionProcessManager::const_iterator iter = epm->begin();
-       iter != epm->end();
+  for (ExtensionProcessManager::const_iterator iter =
+           epm->background_hosts().begin();
+       iter != epm->background_hosts().end();
        ++iter) {
     ExtensionHost* host = *iter;
     if (host->extension()->has_background_page()) {