Revert 221580 "Make AppShimHostManager a RefCountedThreadSafe."

trunk/src/chrome/browser/browser_process_platform_part_mac.mm

Index: trunk/src/chrome/browser/browser_process_platform_part_mac.mm
===================================================================
--- trunk/src/chrome/browser/browser_process_platform_part_mac.mm	(revision 221792)
+++ trunk/src/chrome/browser/browser_process_platform_part_mac.mm	(working copy)
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/browser_process_platform_part_mac.h"
 
+#include "apps/app_shim/app_shim_host_manager_mac.h"
 #include "chrome/browser/chrome_browser_application_mac.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 
@@ -14,7 +15,7 @@
 }
 
 void BrowserProcessPlatformPart::StartTearDown() {
-  app_shim_host_manager_ = NULL;
+  app_shim_host_manager_.reset();
 }
 
 void BrowserProcessPlatformPart::AttemptExit() {
@@ -25,7 +26,7 @@
 }
 
 void BrowserProcessPlatformPart::PreMainMessageLoopRun() {
-  app_shim_host_manager_ = new AppShimHostManager;
+  app_shim_host_manager_.reset(new AppShimHostManager);
   AppListService::InitAll(NULL);
 }