content: Cleanup class/struct forward declarations

content/shell/browser/layout_test/blink_test_controller.h

 // 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.
 
 #ifndef CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 #define CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 #include <ostream>
@@ skipping 17 matching lines @@
 #include "content/public/common/web_preferences.h"
 #include "content/shell/common/leak_detection_result.h"
 #include "ui/gfx/geometry/size.h"
 
 #if defined(OS_ANDROID)
 #include "base/threading/thread_restrictions.h"
 #endif
 
 class SkBitmap;
 
-namespace url {
-class Origin;
-}
-
 namespace content {
 
 class LayoutTestBluetoothChooserFactory;
 class LayoutTestDevToolsFrontend;
 class RenderFrameHost;
 class RenderProcessHost;
 class Shell;
 
 #if defined(OS_ANDROID)
 // Android uses a nested message loop for running layout tests because the
@@ skipping 235 matching lines @@
   // waiting on the UI thread while layout tests are being ran.
   ScopedAllowWaitForAndroidLayoutTests reduced_restrictions_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BlinkTestController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_