aura: Require explicit ownership of the Env instance.

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 5f87e69191bf4af7ca50dc799482dc8aa00ebacc..e7edc8e1e62379ab3c3078ac34d6bc0a09011c6e 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -13,6 +13,12 @@
 #include "content/browser/browser_process_sub_thread.h"
 #include "content/public/browser/browser_main_runner.h"
 
+#if defined(USE_AURA)
+namespace aura {
+class Env;
+}
+#endif
+
 namespace base {
 class CommandLine;
 class FilePath;
@@ -194,6 +200,10 @@ class CONTENT_EXPORT BrowserMainLoop {
   scoped_ptr<base::trace_event::TraceEventSystemStatsMonitor>
       system_stats_monitor_;
 
+#if defined(USE_AURA)
+  scoped_ptr<aura::Env> env_;
+#endif
+
 #if defined(OS_WIN)
   scoped_ptr<SystemMessageWindowWin> system_message_window_;
 #endif