Optimize promotion of ephemeral apps

chrome/browser/extensions/install_tracker.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/install_tracker.h"
 
 #include "base/bind.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/install_tracker_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 127 matching lines @@
     const Extension* extension,
     UnloadedExtensionInfo::Reason reason) {
   FOR_EACH_OBSERVER(
       InstallObserver, observers_, OnExtensionUnloaded(extension));
 }
 
 void InstallTracker::OnExtensionWillBeInstalled(
     content::BrowserContext* browser_context,
     const Extension* extension,
     bool is_update,
+    bool from_ephemeral,
     const std::string& old_name) {
   FOR_EACH_OBSERVER(
       InstallObserver, observers_, OnExtensionInstalled(extension));
 }
 
 void InstallTracker::OnAppsReordered() {
   FOR_EACH_OBSERVER(InstallObserver, observers_, OnAppsReordered());
 }
 
 }  // namespace extensions