cros: Defer lockscreen updateUserImage and loadUser calls.

chrome/browser/ui/webui/chromeos/login/base_screen_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_
 
 #include <string>
 
 #include "base/bind.h"
@@ skipping 202 matching lines @@
   OobeScreen GetCurrentScreen() const;
 
   // Whether page is ready.
   bool page_is_ready() const { return page_is_ready_; }
 
   // Returns the window which shows us.
   virtual gfx::NativeWindow GetNativeWindow();
 
   void SetBaseScreen(BaseScreen* base_screen);
 
+  // Returns true if JS side has sent a screenStateInitialize event.
+  // TODO(jdufault): Remove after resolving crbug.com/699798
+  bool is_js_initialized_and_ready() const {
+    return js_calls_container_->is_initialized();
+  }
+
  private:
   // Calls Javascript method.
   //
   // Note that the Args template parameter pack should consist of types
   // convertible to base::Value.
   template <typename... Args>
   void ExecuteDeferredJSCall(const std::string& function_name,
                              std::unique_ptr<Args>... args) {
     CallJS(function_name, *args...);
   }
@@ skipping 27 matching lines @@
   base::DictionaryValue pending_context_changes_;
 
   JSCallsContainer* js_calls_container_ = nullptr;  // non-owning pointers.
 
   DISALLOW_COPY_AND_ASSIGN(BaseScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_H_