Remove calls to deprecated MessageLoop methods in extensions.

extensions/browser/extension_icon_image_unittest.cc

 // Copyright 2014 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 "extensions/browser/extension_icon_image.h"
 
 #include <vector>
 
 #include "base/json/json_file_value_serializer.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
+#include "base/run_loop.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/public/test/test_browser_thread.h"
 #include "extensions/browser/extensions_test.h"
 #include "extensions/browser/image_loader.h"
 #include "extensions/browser/test_image_loader.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_paths.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/manifest_handlers/icons_handler.h"
@@ skipping 52 matching lines @@
         quit_in_image_loaded_(false),
         ui_thread_(BrowserThread::UI, &ui_loop_),
         file_thread_(BrowserThread::FILE),
         io_thread_(BrowserThread::IO),
         notification_service_(content::NotificationService::Create()) {}
 
   ~ExtensionIconImageTest() override {}
 
   void WaitForImageLoad() {
     quit_in_image_loaded_ = true;
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
     quit_in_image_loaded_ = false;
   }
 
   int ImageLoadedCount() {
     int result = image_loaded_count_;
     image_loaded_count_ = 0;
     return result;
   }
 
   scoped_refptr<Extension> CreateExtension(const char* name,
@@ skipping 441 matching lines @@
   // because image storage is shared, so when we created one from the first
   // image, all other images should also have that representation...
   gfx::Image image2 = icon_image->image();
   EXPECT_EQ(image_as_png.get(), image2.As1xPNGBytes().get());
 
   // ...even images that were copied before the representation was constructed.
   EXPECT_EQ(image_as_png.get(), prior_image.As1xPNGBytes().get());
 }
 
 }  // namespace extensions