Moved IS_EPHEMERAL flag to extension prefs

chrome/browser/extensions/crx_installer.h

Index: chrome/browser/extensions/crx_installer.h
diff --git a/chrome/browser/extensions/crx_installer.h b/chrome/browser/extensions/crx_installer.h
index 8e3575bd4ff3a1fd3142afcb09c0b2deb2cd05e8..c8c5b525a2c15b34bb49955e2b79e41bcd1d6bc1 100644
--- a/chrome/browser/extensions/crx_installer.h
+++ b/chrome/browser/extensions/crx_installer.h
@@ -180,6 +180,10 @@ class CrxInstaller
     install_wait_for_idle_ = val;
   }
 
+  void set_is_ephemeral(bool val) {
+    is_ephemeral_ = val;
+  }
+
   bool did_handle_successfully() const { return did_handle_successfully_; }
 
   Profile* profile() { return installer_.profile(); }
@@ -391,6 +395,9 @@ class CrxInstaller
   // page.
   bool update_from_settings_page_;
 
+  // True if an ephemeral app is being installed.
+  bool is_ephemeral_;
+
   // Gives access to common methods and data of an extension installer.
   ExtensionInstaller installer_;