Extract ProcessManager from ExtensionSystem.

extensions/shell/browser/shell_extension_system.cc

Index: extensions/shell/browser/shell_extension_system.cc
diff --git a/extensions/shell/browser/shell_extension_system.cc b/extensions/shell/browser/shell_extension_system.cc
index 6337108ccb297b4bd170d950cfeb00cd58d911d6..67b37fc102385bc7149c33a76f37e9b96ce22a00 100644
--- a/extensions/shell/browser/shell_extension_system.cc
+++ b/extensions/shell/browser/shell_extension_system.cc
@@ -20,7 +20,6 @@
 #include "extensions/browser/info_map.h"
 #include "extensions/browser/lazy_background_task_queue.h"
 #include "extensions/browser/notification_types.h"
-#include "extensions/browser/process_manager.h"
 #include "extensions/browser/quota_service.h"
 #include "extensions/browser/runtime_data.h"
 #include "extensions/common/file_util.h"
@@ -101,7 +100,6 @@ void ShellExtensionSystem::InitForRegularProfile(bool extensions_enabled) {
       new LazyBackgroundTaskQueue(browser_context_));
   event_router_.reset(
       new EventRouter(browser_context_, ExtensionPrefs::Get(browser_context_)));
-  process_manager_.reset(ProcessManager::Create(browser_context_));
   quota_service_.reset(new QuotaService);
 }
 
@@ -121,10 +119,6 @@ SharedUserScriptMaster* ShellExtensionSystem::shared_user_script_master() {
   return NULL;
 }
 
-ProcessManager* ShellExtensionSystem::process_manager() {
-  return process_manager_.get();
-}
-
 StateStore* ShellExtensionSystem::state_store() {
   return NULL;
 }