ios: Cleanup class/struct forward declarations

ios/web/public/test/web_js_test.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 IOS_INTERNAL_CHROME_BROWSER_WEB_WEB_JS_TEST_H_
 #define IOS_INTERNAL_CHROME_BROWSER_WEB_WEB_JS_TEST_H_
 
 #import <Foundation/Foundation.h>
 
 #import "base/mac/bundle_locations.h"
 #import "base/mac/scoped_nsobject.h"
 #include "testing/gtest_mac.h"
 
-class GURL;
-
 namespace web {
 
 // Base fixture mixin for testing JavaScripts.
 template <class WebTestT>
 class WebJsTest : public WebTestT {
  public:
   WebJsTest(NSArray* java_script_paths)
       : java_script_paths_([java_script_paths copy]) {}
 
  protected:
@@ skipping 82 matching lines @@
     EXPECT_NSEQ(@(expected), ExecuteJavaScriptWithFormat(
                                  java_script, get_element_java_script))
         << [NSString stringWithFormat:@"%@ on %@ should return %d", java_script,
                                       get_element_java_script, expected];
   }
 }
 
 }  // namespace web
 
 #endif  // IOS_INTERNAL_CHROME_BROWSER_WEB_WEB_JS_TEST_H_