Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/extensions/api/developer_private/developer_private_api.cc

 // Copyright (c) 2012 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/api/developer_private/developer_private_api.h"
 
 #include "apps/app_load_service.h"
 #include "apps/app_restore_service.h"
 #include "apps/app_window.h"
 #include "apps/app_window_registry.h"
@@ skipping 262 matching lines @@
     bool is_update,
     bool from_ephemeral,
     const std::string& old_name) {
   DCHECK(profile_->IsSameProfile(Profile::FromBrowserContext(browser_context)));
   BroadcastItemStateChanged(
       browser_context, developer::EVENT_TYPE_INSTALLED, extension->id());
 }
 
 void DeveloperPrivateEventRouter::OnExtensionUninstalled(
     content::BrowserContext* browser_context,
-    const Extension* extension) {
+    const Extension* extension,
+    extensions::UninstallReason reason) {
   DCHECK(profile_->IsSameProfile(Profile::FromBrowserContext(browser_context)));
   BroadcastItemStateChanged(
       browser_context, developer::EVENT_TYPE_UNINSTALLED, extension->id());
 }
 
 void DeveloperPrivateEventRouter::OnErrorAdded(const ExtensionError* error) {
   // We don't want to handle errors thrown by extensions subscribed to these
   // events (currently only the Apps Developer Tool), because doing so risks
   // entering a loop.
   if (extension_ids_.find(error->extension_id()) != extension_ids_.end())
@@ skipping 1104 matching lines @@
   }
 
   error_ui_util::HandleOpenDevTools(dict);
 
   return true;
 }
 
 }  // namespace api
 
 }  // namespace extensions