Move system.* family of APIs to extensions/

apps/shell/browser/shell_extensions_browser_client.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 "apps/shell/browser/shell_extensions_browser_client.h"
 
 #include "apps/shell/browser/shell_app_sorting.h"
 #include "apps/shell/browser/shell_extension_system_factory.h"
 #include "apps/shell/browser/shell_extension_web_contents_observer.h"
 #include "apps/shell/browser/shell_runtime_api_delegate.h"
@@ skipping 224 matching lines @@
 ShellExtensionsBrowserClient::CreateRuntimeAPIDelegate(
     content::BrowserContext* context) const {
   return scoped_ptr<RuntimeAPIDelegate>(new apps::ShellRuntimeAPIDelegate());
 }
 
 ComponentExtensionResourceManager*
 ShellExtensionsBrowserClient::GetComponentExtensionResourceManager() {
   return NULL;
 }
 
+void ShellExtensionsBrowserClient::BroadcastEventToRenderers(
+    const std::string& event_name,
+    scoped_ptr<base::ListValue> args) {
+  // system.storage and system.display APIs won't notify when a removable
+  // storage or display is connected/disconnected unless we implement
+  // this method.

[Yoyo Zhou, 2014/07/15 00:39:13]

I'm confused - is this meant to be implemented?

You could work within the assumption that there's only one browser context
(browser_context_) in app_shell, and dispatch it to just its event router.

+}
+
 }  // namespace extensions